Home / 8,790.38-12,130.12-5,013.71

Finding the Fourth Proportional to 8,790.38, 12,130.12 and 5,013.71

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Solution

The fourth proportional to 8,790.38, 12,130.12 and 5,013.71 is: 6,918.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.38 : 12,130.12 = 5,013.71 : x
  2. Step 2: Convert to fraction form
    8,790.38/12,130.12 = 5,013.71/x
  3. Step 3: Cross multiply
    8,790.38x = 12,130.12 × 5,013.71
  4. Step 4: Simplify right side
    8,790.38x = 60,816,903.95
  5. Step 5: Solve for x
    x = 60,816,903.95/8,790.38
  6. Step 6: Final answer
    x = 6,918.58

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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.