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Finding the Fourth Proportional to 7,234.15, 9,984.78 and 4,711.87

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Solution

The fourth proportional to 7,234.15, 9,984.78 and 4,711.87 is: 6,503.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,234.15 : 9,984.78 = 4,711.87 : x
  2. Step 2: Convert to fraction form
    7,234.15/9,984.78 = 4,711.87/x
  3. Step 3: Cross multiply
    7,234.15x = 9,984.78 × 4,711.87
  4. Step 4: Simplify right side
    7,234.15x = 47,046,985.34
  5. Step 5: Solve for x
    x = 47,046,985.34/7,234.15
  6. Step 6: Final answer
    x = 6,503.46

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1.5x scale

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.