Home / 3,138.02-4,330.45-1,740.77

Finding the Fourth Proportional to 3,138.02, 4,330.45 and 1,740.77

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Solution

The fourth proportional to 3,138.02, 4,330.45 and 1,740.77 is: 2,402.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.02 : 4,330.45 = 1,740.77 : x
  2. Step 2: Convert to fraction form
    3,138.02/4,330.45 = 1,740.77/x
  3. Step 3: Cross multiply
    3,138.02x = 4,330.45 × 1,740.77
  4. Step 4: Simplify right side
    3,138.02x = 7,538,291.44
  5. Step 5: Solve for x
    x = 7,538,291.44/3,138.02
  6. Step 6: Final answer
    x = 2,402.25

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Half scale
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Double scale
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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.