Home / 8,987.14-13,447.90-5,291.12

Finding the Fourth Proportional to 8,987.14, 13,447.90 and 5,291.12

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Solution

The fourth proportional to 8,987.14, 13,447.90 and 5,291.12 is: 7,917.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.14 : 13,447.90 = 5,291.12 : x
  2. Step 2: Convert to fraction form
    8,987.14/13,447.90 = 5,291.12/x
  3. Step 3: Cross multiply
    8,987.14x = 13,447.90 × 5,291.12
  4. Step 4: Simplify right side
    8,987.14x = 71,154,452.65
  5. Step 5: Solve for x
    x = 71,154,452.65/8,987.14
  6. Step 6: Final answer
    x = 7,917.36

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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.