Home / 1,387.22-2,077.05-1,061.06

Finding the Fourth Proportional to 1,387.22, 2,077.05 and 1,061.06

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Solution

The fourth proportional to 1,387.22, 2,077.05 and 1,061.06 is: 1,588.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387.22 : 2,077.05 = 1,061.06 : x
  2. Step 2: Convert to fraction form
    1,387.22/2,077.05 = 1,061.06/x
  3. Step 3: Cross multiply
    1,387.22x = 2,077.05 × 1,061.06
  4. Step 4: Simplify right side
    1,387.22x = 2,203,874.67
  5. Step 5: Solve for x
    x = 2,203,874.67/1,387.22
  6. Step 6: Final answer
    x = 1,588.70

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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.