Home / 1,863.85-2,572.47-1,077.91

Finding the Fourth Proportional to 1,863.85, 2,572.47 and 1,077.91

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Solution

The fourth proportional to 1,863.85, 2,572.47 and 1,077.91 is: 1,487.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.85 : 2,572.47 = 1,077.91 : x
  2. Step 2: Convert to fraction form
    1,863.85/2,572.47 = 1,077.91/x
  3. Step 3: Cross multiply
    1,863.85x = 2,572.47 × 1,077.91
  4. Step 4: Simplify right side
    1,863.85x = 2,772,891.14
  5. Step 5: Solve for x
    x = 2,772,891.14/1,863.85
  6. Step 6: Final answer
    x = 1,487.72

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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.