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Finding the Fourth Proportional to 4,721.73, 7,081.64 and 4,487.55

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Solution

The fourth proportional to 4,721.73, 7,081.64 and 4,487.55 is: 6,730.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.73 : 7,081.64 = 4,487.55 : x
  2. Step 2: Convert to fraction form
    4,721.73/7,081.64 = 4,487.55/x
  3. Step 3: Cross multiply
    4,721.73x = 7,081.64 × 4,487.55
  4. Step 4: Simplify right side
    4,721.73x = 31,779,191.14
  5. Step 5: Solve for x
    x = 31,779,191.14/4,721.73
  6. Step 6: Final answer
    x = 6,730.41

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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.