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Finding the Fourth Proportional to 6,506.16, 8,979.24 and 3,987.69

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Solution

The fourth proportional to 6,506.16, 8,979.24 and 3,987.69 is: 5,503.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,506.16 : 8,979.24 = 3,987.69 : x
  2. Step 2: Convert to fraction form
    6,506.16/8,979.24 = 3,987.69/x
  3. Step 3: Cross multiply
    6,506.16x = 8,979.24 × 3,987.69
  4. Step 4: Simplify right side
    6,506.16x = 35,806,425.56
  5. Step 5: Solve for x
    x = 35,806,425.56/6,506.16
  6. Step 6: Final answer
    x = 5,503.47

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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.