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Finding the Fourth Proportional to 8,449.46, 12,681.48 and 4,070

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Solution

The fourth proportional to 8,449.46, 12,681.48 and 4,070 is: 6,108.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,449.46 : 12,681.48 = 4,070 : x
  2. Step 2: Convert to fraction form
    8,449.46/12,681.48 = 4,070/x
  3. Step 3: Cross multiply
    8,449.46x = 12,681.48 × 4,070
  4. Step 4: Simplify right side
    8,449.46x = 51,613,623.60
  5. Step 5: Solve for x
    x = 51,613,623.60/8,449.46
  6. Step 6: Final answer
    x = 6,108.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.