Home / 2,475.70-3,414.93-1,531.78

Finding the Fourth Proportional to 2,475.70, 3,414.93 and 1,531.78

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Solution

The fourth proportional to 2,475.70, 3,414.93 and 1,531.78 is: 2,112.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,475.70 : 3,414.93 = 1,531.78 : x
  2. Step 2: Convert to fraction form
    2,475.70/3,414.93 = 1,531.78/x
  3. Step 3: Cross multiply
    2,475.70x = 3,414.93 × 1,531.78
  4. Step 4: Simplify right side
    2,475.70x = 5,230,907.19
  5. Step 5: Solve for x
    x = 5,230,907.19/2,475.70
  6. Step 6: Final answer
    x = 2,112.90

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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.