Home / 1,878.53-2,589.60-1,478.90

Finding the Fourth Proportional to 1,878.53, 2,589.60 and 1,478.90

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Solution

The fourth proportional to 1,878.53, 2,589.60 and 1,478.90 is: 2,038.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.53 : 2,589.60 = 1,478.90 : x
  2. Step 2: Convert to fraction form
    1,878.53/2,589.60 = 1,478.90/x
  3. Step 3: Cross multiply
    1,878.53x = 2,589.60 × 1,478.90
  4. Step 4: Simplify right side
    1,878.53x = 3,829,765.91
  5. Step 5: Solve for x
    x = 3,829,765.91/1,878.53
  6. Step 6: Final answer
    x = 2,038.71

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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.