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Finding the Fourth Proportional to 5,240.79, 7,892.39 and 4,726.71

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Solution

The fourth proportional to 5,240.79, 7,892.39 and 4,726.71 is: 7,118.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.79 : 7,892.39 = 4,726.71 : x
  2. Step 2: Convert to fraction form
    5,240.79/7,892.39 = 4,726.71/x
  3. Step 3: Cross multiply
    5,240.79x = 7,892.39 × 4,726.71
  4. Step 4: Simplify right side
    5,240.79x = 37,305,015.10
  5. Step 5: Solve for x
    x = 37,305,015.10/5,240.79
  6. Step 6: Final answer
    x = 7,118.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.