Home / 8,911.57-12,301.05-5,136.24

Finding the Fourth Proportional to 8,911.57, 12,301.05 and 5,136.24

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Solution

The fourth proportional to 8,911.57, 12,301.05 and 5,136.24 is: 7,089.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.57 : 12,301.05 = 5,136.24 : x
  2. Step 2: Convert to fraction form
    8,911.57/12,301.05 = 5,136.24/x
  3. Step 3: Cross multiply
    8,911.57x = 12,301.05 × 5,136.24
  4. Step 4: Simplify right side
    8,911.57x = 63,181,167.10
  5. Step 5: Solve for x
    x = 63,181,167.10/8,911.57
  6. Step 6: Final answer
    x = 7,089.79

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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.