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Finding the Fourth Proportional to 9,998.12, 15,000.30 and 3,758.70

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Solution

The fourth proportional to 9,998.12, 15,000.30 and 3,758.70 is: 5,639.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,998.12 : 15,000.30 = 3,758.70 : x
  2. Step 2: Convert to fraction form
    9,998.12/15,000.30 = 3,758.70/x
  3. Step 3: Cross multiply
    9,998.12x = 15,000.30 × 3,758.70
  4. Step 4: Simplify right side
    9,998.12x = 56,381,627.61
  5. Step 5: Solve for x
    x = 56,381,627.61/9,998.12
  6. Step 6: Final answer
    x = 5,639.22

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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.