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Finding the Fourth Proportional to 3,965,728.25, 5,472,737.79 and 2,154,892.25

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Solution

The fourth proportional to 3,965,728.25, 5,472,737.79 and 2,154,892.25 is: 2,973,769.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965,728.25 : 5,472,737.79 = 2,154,892.25 : x
  2. Step 2: Convert to fraction form
    3,965,728.25/5,472,737.79 = 2,154,892.25/x
  3. Step 3: Cross multiply
    3,965,728.25x = 5,472,737.79 × 2,154,892.25
  4. Step 4: Simplify right side
    3,965,728.25x = 11,793,160,249,953.13
  5. Step 5: Solve for x
    x = 11,793,160,249,953.13/3,965,728.25
  6. Step 6: Final answer
    x = 2,973,769.13

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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.