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Finding the Fourth Proportional to 6,616.89, 9,130.59 and 3,964.23

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Solution

The fourth proportional to 6,616.89, 9,130.59 and 3,964.23 is: 5,470.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,616.89 : 9,130.59 = 3,964.23 : x
  2. Step 2: Convert to fraction form
    6,616.89/9,130.59 = 3,964.23/x
  3. Step 3: Cross multiply
    6,616.89x = 9,130.59 × 3,964.23
  4. Step 4: Simplify right side
    6,616.89x = 36,195,758.80
  5. Step 5: Solve for x
    x = 36,195,758.80/6,616.89
  6. Step 6: Final answer
    x = 5,470.21

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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.