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Finding the Fourth Proportional to 8,681.50, 13,019.54 and 3,134.12

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Solution

The fourth proportional to 8,681.50, 13,019.54 and 3,134.12 is: 4,700.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.50 : 13,019.54 = 3,134.12 : x
  2. Step 2: Convert to fraction form
    8,681.50/13,019.54 = 3,134.12/x
  3. Step 3: Cross multiply
    8,681.50x = 13,019.54 × 3,134.12
  4. Step 4: Simplify right side
    8,681.50x = 40,804,800.70
  5. Step 5: Solve for x
    x = 40,804,800.70/8,681.50
  6. Step 6: Final answer
    x = 4,700.20

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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.