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Finding the Fourth Proportional to 4,487.78, 6,721.22 and 4,332.08

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Solution

The fourth proportional to 4,487.78, 6,721.22 and 4,332.08 is: 6,488.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,487.78 : 6,721.22 = 4,332.08 : x
  2. Step 2: Convert to fraction form
    4,487.78/6,721.22 = 4,332.08/x
  3. Step 3: Cross multiply
    4,487.78x = 6,721.22 × 4,332.08
  4. Step 4: Simplify right side
    4,487.78x = 29,116,862.74
  5. Step 5: Solve for x
    x = 29,116,862.74/4,487.78
  6. Step 6: Final answer
    x = 6,488.03

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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.