Home / 8,489.90-11,718.51-5,132.72

Finding the Fourth Proportional to 8,489.90, 11,718.51 and 5,132.72

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Solution

The fourth proportional to 8,489.90, 11,718.51 and 5,132.72 is: 7,084.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489.90 : 11,718.51 = 5,132.72 : x
  2. Step 2: Convert to fraction form
    8,489.90/11,718.51 = 5,132.72/x
  3. Step 3: Cross multiply
    8,489.90x = 11,718.51 × 5,132.72
  4. Step 4: Simplify right side
    8,489.90x = 60,147,830.65
  5. Step 5: Solve for x
    x = 60,147,830.65/8,489.90
  6. Step 6: Final answer
    x = 7,084.63

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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.