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Finding the Fourth Proportional to 2,079.42, 2,869.47 and 1,147.92

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Solution

The fourth proportional to 2,079.42, 2,869.47 and 1,147.92 is: 1,584.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.42 : 2,869.47 = 1,147.92 : x
  2. Step 2: Convert to fraction form
    2,079.42/2,869.47 = 1,147.92/x
  3. Step 3: Cross multiply
    2,079.42x = 2,869.47 × 1,147.92
  4. Step 4: Simplify right side
    2,079.42x = 3,293,922.00
  5. Step 5: Solve for x
    x = 3,293,922.00/2,079.42
  6. Step 6: Final answer
    x = 1,584.06

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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.