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Finding the Fourth Proportional to 1,191.12, 1,785.12 and 1,044.50

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Solution

The fourth proportional to 1,191.12, 1,785.12 and 1,044.50 is: 1,565.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.12 : 1,785.12 = 1,044.50 : x
  2. Step 2: Convert to fraction form
    1,191.12/1,785.12 = 1,044.50/x
  3. Step 3: Cross multiply
    1,191.12x = 1,785.12 × 1,044.50
  4. Step 4: Simplify right side
    1,191.12x = 1,864,557.84
  5. Step 5: Solve for x
    x = 1,864,557.84/1,191.12
  6. Step 6: Final answer
    x = 1,565.38

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1.5x scale

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.