Home / 3,128.48-4,319.12-1,950.16

Finding the Fourth Proportional to 3,128.48, 4,319.12 and 1,950.16

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Solution

The fourth proportional to 3,128.48, 4,319.12 and 1,950.16 is: 2,692.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.48 : 4,319.12 = 1,950.16 : x
  2. Step 2: Convert to fraction form
    3,128.48/4,319.12 = 1,950.16/x
  3. Step 3: Cross multiply
    3,128.48x = 4,319.12 × 1,950.16
  4. Step 4: Simplify right side
    3,128.48x = 8,422,975.06
  5. Step 5: Solve for x
    x = 8,422,975.06/3,128.48
  6. Step 6: Final answer
    x = 2,692.35

Related Problems

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Half scale
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Double scale
Find fourth proportional to 3,129.48, 4,320.50 and 1,951.16
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.