Home / 8,391.85-11,581.40-5,034.79

Finding the Fourth Proportional to 8,391.85, 11,581.40 and 5,034.79

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Solution

The fourth proportional to 8,391.85, 11,581.40 and 5,034.79 is: 6,948.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.85 : 11,581.40 = 5,034.79 : x
  2. Step 2: Convert to fraction form
    8,391.85/11,581.40 = 5,034.79/x
  3. Step 3: Cross multiply
    8,391.85x = 11,581.40 × 5,034.79
  4. Step 4: Simplify right side
    8,391.85x = 58,309,916.91
  5. Step 5: Solve for x
    x = 58,309,916.91/8,391.85
  6. Step 6: Final answer
    x = 6,948.40

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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.