Home / 9,117.56-13,680.46-5,221.97

Finding the Fourth Proportional to 9,117.56, 13,680.46 and 5,221.97

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Solution

The fourth proportional to 9,117.56, 13,680.46 and 5,221.97 is: 7,835.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,117.56 : 13,680.46 = 5,221.97 : x
  2. Step 2: Convert to fraction form
    9,117.56/13,680.46 = 5,221.97/x
  3. Step 3: Cross multiply
    9,117.56x = 13,680.46 × 5,221.97
  4. Step 4: Simplify right side
    9,117.56x = 71,438,941.13
  5. Step 5: Solve for x
    x = 71,438,941.13/9,117.56
  6. Step 6: Final answer
    x = 7,835.31

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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.