Home / 5,377.53-7,419.69-3,138.12

Finding the Fourth Proportional to 5,377.53, 7,419.69 and 3,138.12

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Solution

The fourth proportional to 5,377.53, 7,419.69 and 3,138.12 is: 4,329.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,377.53 : 7,419.69 = 3,138.12 : x
  2. Step 2: Convert to fraction form
    5,377.53/7,419.69 = 3,138.12/x
  3. Step 3: Cross multiply
    5,377.53x = 7,419.69 × 3,138.12
  4. Step 4: Simplify right side
    5,377.53x = 23,283,877.58
  5. Step 5: Solve for x
    x = 23,283,877.58/5,377.53
  6. Step 6: Final answer
    x = 4,329.85

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1.5x scale

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.