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Finding the Fourth Proportional to 9,000.93, 12,421.18 and 5,645.71

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Solution

The fourth proportional to 9,000.93, 12,421.18 and 5,645.71 is: 7,791.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000.93 : 12,421.18 = 5,645.71 : x
  2. Step 2: Convert to fraction form
    9,000.93/12,421.18 = 5,645.71/x
  3. Step 3: Cross multiply
    9,000.93x = 12,421.18 × 5,645.71
  4. Step 4: Simplify right side
    9,000.93x = 70,126,380.14
  5. Step 5: Solve for x
    x = 70,126,380.14/9,000.93
  6. Step 6: Final answer
    x = 7,791.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.