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Finding the Fourth Proportional to 9,042.11, 13,555.86 and 5,141.15

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Solution

The fourth proportional to 9,042.11, 13,555.86 and 5,141.15 is: 7,707.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,042.11 : 13,555.86 = 5,141.15 : x
  2. Step 2: Convert to fraction form
    9,042.11/13,555.86 = 5,141.15/x
  3. Step 3: Cross multiply
    9,042.11x = 13,555.86 × 5,141.15
  4. Step 4: Simplify right side
    9,042.11x = 69,692,641.86
  5. Step 5: Solve for x
    x = 69,692,641.86/9,042.11
  6. Step 6: Final answer
    x = 7,707.57

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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.