Home / 8,790.48-12,132.04-5,655.78

Finding the Fourth Proportional to 8,790.48, 12,132.04 and 5,655.78

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Solution

The fourth proportional to 8,790.48, 12,132.04 and 5,655.78 is: 7,805.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.48 : 12,132.04 = 5,655.78 : x
  2. Step 2: Convert to fraction form
    8,790.48/12,132.04 = 5,655.78/x
  3. Step 3: Cross multiply
    8,790.48x = 12,132.04 × 5,655.78
  4. Step 4: Simplify right side
    8,790.48x = 68,616,149.19
  5. Step 5: Solve for x
    x = 68,616,149.19/8,790.48
  6. Step 6: Final answer
    x = 7,805.73

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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.