Home / 3,937.60-5,429.28-2,365.12

Finding the Fourth Proportional to 3,937.60, 5,429.28 and 2,365.12

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Solution

The fourth proportional to 3,937.60, 5,429.28 and 2,365.12 is: 3,261.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.60 : 5,429.28 = 2,365.12 : x
  2. Step 2: Convert to fraction form
    3,937.60/5,429.28 = 2,365.12/x
  3. Step 3: Cross multiply
    3,937.60x = 5,429.28 × 2,365.12
  4. Step 4: Simplify right side
    3,937.60x = 12,840,898.71
  5. Step 5: Solve for x
    x = 12,840,898.71/3,937.60
  6. Step 6: Final answer
    x = 3,261.10

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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.