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Finding the Fourth Proportional to 1,524.33, 2,103.33 and 861.17

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Solution

The fourth proportional to 1,524.33, 2,103.33 and 861.17 is: 1,188.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,524.33 : 2,103.33 = 861.17 : x
  2. Step 2: Convert to fraction form
    1,524.33/2,103.33 = 861.17/x
  3. Step 3: Cross multiply
    1,524.33x = 2,103.33 × 861.17
  4. Step 4: Simplify right side
    1,524.33x = 1,811,314.18
  5. Step 5: Solve for x
    x = 1,811,314.18/1,524.33
  6. Step 6: Final answer
    x = 1,188.27

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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.