Home / 4,228.80-6,343.20-1,307.10

Finding the Fourth Proportional to 4,228.80, 6,343.20 and 1,307.10

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Solution

The fourth proportional to 4,228.80, 6,343.20 and 1,307.10 is: 1,960.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,228.80 : 6,343.20 = 1,307.10 : x
  2. Step 2: Convert to fraction form
    4,228.80/6,343.20 = 1,307.10/x
  3. Step 3: Cross multiply
    4,228.80x = 6,343.20 × 1,307.10
  4. Step 4: Simplify right side
    4,228.80x = 8,291,196.72
  5. Step 5: Solve for x
    x = 8,291,196.72/4,228.80
  6. Step 6: Final answer
    x = 1,960.65

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.