Home / 8,790.60-12,132.38-5,013.76

Finding the Fourth Proportional to 8,790.60, 12,132.38 and 5,013.76

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Solution

The fourth proportional to 8,790.60, 12,132.38 and 5,013.76 is: 6,919.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.60 : 12,132.38 = 5,013.76 : x
  2. Step 2: Convert to fraction form
    8,790.60/12,132.38 = 5,013.76/x
  3. Step 3: Cross multiply
    8,790.60x = 12,132.38 × 5,013.76
  4. Step 4: Simplify right side
    8,790.60x = 60,828,841.55
  5. Step 5: Solve for x
    x = 60,828,841.55/8,790.60
  6. Step 6: Final answer
    x = 6,919.76

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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.