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Finding the Fourth Proportional to 9,998.12, 15,000.29 and 3,758.69

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Solution

The fourth proportional to 9,998.12, 15,000.29 and 3,758.69 is: 5,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,998.12 : 15,000.29 = 3,758.69 : x
  2. Step 2: Convert to fraction form
    9,998.12/15,000.29 = 3,758.69/x
  3. Step 3: Cross multiply
    9,998.12x = 15,000.29 × 3,758.69
  4. Step 4: Simplify right side
    9,998.12x = 56,381,421.23
  5. Step 5: Solve for x
    x = 56,381,421.23/9,998.12
  6. Step 6: Final answer
    x = 5,639.20

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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.