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Finding the Fourth Proportional to 8,697.88, 13,047.18 and 2,124.28

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Solution

The fourth proportional to 8,697.88, 13,047.18 and 2,124.28 is: 3,186.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,697.88 : 13,047.18 = 2,124.28 : x
  2. Step 2: Convert to fraction form
    8,697.88/13,047.18 = 2,124.28/x
  3. Step 3: Cross multiply
    8,697.88x = 13,047.18 × 2,124.28
  4. Step 4: Simplify right side
    8,697.88x = 27,715,863.53
  5. Step 5: Solve for x
    x = 27,715,863.53/8,697.88
  6. Step 6: Final answer
    x = 3,186.51

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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.