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Finding the Fourth Proportional to 8,681.74, 13,008.93 and 6,712.18

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Solution

The fourth proportional to 8,681.74, 13,008.93 and 6,712.18 is: 10,057.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.74 : 13,008.93 = 6,712.18 : x
  2. Step 2: Convert to fraction form
    8,681.74/13,008.93 = 6,712.18/x
  3. Step 3: Cross multiply
    8,681.74x = 13,008.93 × 6,712.18
  4. Step 4: Simplify right side
    8,681.74x = 87,318,247.25
  5. Step 5: Solve for x
    x = 87,318,247.25/8,681.74
  6. Step 6: Final answer
    x = 10,057.69

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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.