Home / 3,487.38-4,812.58-1,915.57

Finding the Fourth Proportional to 3,487.38, 4,812.58 and 1,915.57

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Solution

The fourth proportional to 3,487.38, 4,812.58 and 1,915.57 is: 2,643.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.38 : 4,812.58 = 1,915.57 : x
  2. Step 2: Convert to fraction form
    3,487.38/4,812.58 = 1,915.57/x
  3. Step 3: Cross multiply
    3,487.38x = 4,812.58 × 1,915.57
  4. Step 4: Simplify right side
    3,487.38x = 9,218,833.87
  5. Step 5: Solve for x
    x = 9,218,833.87/3,487.38
  6. Step 6: Final answer
    x = 2,643.48

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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.