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Finding the Fourth Proportional to 8,549.70, 12,812.67 and 4,657.38

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Solution

The fourth proportional to 8,549.70, 12,812.67 and 4,657.38 is: 6,979.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,549.70 : 12,812.67 = 4,657.38 : x
  2. Step 2: Convert to fraction form
    8,549.70/12,812.67 = 4,657.38/x
  3. Step 3: Cross multiply
    8,549.70x = 12,812.67 × 4,657.38
  4. Step 4: Simplify right side
    8,549.70x = 59,673,473.00
  5. Step 5: Solve for x
    x = 59,673,473.00/8,549.70
  6. Step 6: Final answer
    x = 6,979.60

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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.