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Finding the Fourth Proportional to 8,719.59, 12,032.49 and 4,891.01

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Solution

The fourth proportional to 8,719.59, 12,032.49 and 4,891.01 is: 6,749.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.59 : 12,032.49 = 4,891.01 : x
  2. Step 2: Convert to fraction form
    8,719.59/12,032.49 = 4,891.01/x
  3. Step 3: Cross multiply
    8,719.59x = 12,032.49 × 4,891.01
  4. Step 4: Simplify right side
    8,719.59x = 58,851,057.94
  5. Step 5: Solve for x
    x = 58,851,057.94/8,719.59
  6. Step 6: Final answer
    x = 6,749.29

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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.