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Finding the Fourth Proportional to 8,459.16, 12,617.21 and 7,971.33

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Solution

The fourth proportional to 8,459.16, 12,617.21 and 7,971.33 is: 11,889.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459.16 : 12,617.21 = 7,971.33 : x
  2. Step 2: Convert to fraction form
    8,459.16/12,617.21 = 7,971.33/x
  3. Step 3: Cross multiply
    8,459.16x = 12,617.21 × 7,971.33
  4. Step 4: Simplify right side
    8,459.16x = 100,575,964.52
  5. Step 5: Solve for x
    x = 100,575,964.52/8,459.16
  6. Step 6: Final answer
    x = 11,889.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.