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Finding the Fourth Proportional to 4,487.94, 6,721.46 and 4,332.20

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Solution

The fourth proportional to 4,487.94, 6,721.46 and 4,332.20 is: 6,488.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,487.94 : 6,721.46 = 4,332.20 : x
  2. Step 2: Convert to fraction form
    4,487.94/6,721.46 = 4,332.20/x
  3. Step 3: Cross multiply
    4,487.94x = 6,721.46 × 4,332.20
  4. Step 4: Simplify right side
    4,487.94x = 29,118,709.01
  5. Step 5: Solve for x
    x = 29,118,709.01/4,487.94
  6. Step 6: Final answer
    x = 6,488.21

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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.