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Finding the Fourth Proportional to 8,700.47, 13,050.72 and 2,126.66

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Solution

The fourth proportional to 8,700.47, 13,050.72 and 2,126.66 is: 3,189.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.47 : 13,050.72 = 2,126.66 : x
  2. Step 2: Convert to fraction form
    8,700.47/13,050.72 = 2,126.66/x
  3. Step 3: Cross multiply
    8,700.47x = 13,050.72 × 2,126.66
  4. Step 4: Simplify right side
    8,700.47x = 27,754,444.20
  5. Step 5: Solve for x
    x = 27,754,444.20/8,700.47
  6. Step 6: Final answer
    x = 3,189.99

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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.