Home / 1,778.29-2,454.02-981.62

Finding the Fourth Proportional to 1,778.29, 2,454.02 and 981.62

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Solution

The fourth proportional to 1,778.29, 2,454.02 and 981.62 is: 1,354.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.29 : 2,454.02 = 981.62 : x
  2. Step 2: Convert to fraction form
    1,778.29/2,454.02 = 981.62/x
  3. Step 3: Cross multiply
    1,778.29x = 2,454.02 × 981.62
  4. Step 4: Simplify right side
    1,778.29x = 2,408,915.11
  5. Step 5: Solve for x
    x = 2,408,915.11/1,778.29
  6. Step 6: Final answer
    x = 1,354.62

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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.