Home / 1,878.17-2,587.28-1,435.91

Finding the Fourth Proportional to 1,878.17, 2,587.28 and 1,435.91

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Solution

The fourth proportional to 1,878.17, 2,587.28 and 1,435.91 is: 1,978.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.17 : 2,587.28 = 1,435.91 : x
  2. Step 2: Convert to fraction form
    1,878.17/2,587.28 = 1,435.91/x
  3. Step 3: Cross multiply
    1,878.17x = 2,587.28 × 1,435.91
  4. Step 4: Simplify right side
    1,878.17x = 3,715,081.11
  5. Step 5: Solve for x
    x = 3,715,081.11/1,878.17
  6. Step 6: Final answer
    x = 1,978.04

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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.