Home / 9,812.85-13,542.08-5,621.91

Finding the Fourth Proportional to 9,812.85, 13,542.08 and 5,621.91

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Solution

The fourth proportional to 9,812.85, 13,542.08 and 5,621.91 is: 7,758.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,812.85 : 13,542.08 = 5,621.91 : x
  2. Step 2: Convert to fraction form
    9,812.85/13,542.08 = 5,621.91/x
  3. Step 3: Cross multiply
    9,812.85x = 13,542.08 × 5,621.91
  4. Step 4: Simplify right side
    9,812.85x = 76,132,354.97
  5. Step 5: Solve for x
    x = 76,132,354.97/9,812.85
  6. Step 6: Final answer
    x = 7,758.43

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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.