Home / 3,487.48-4,812.42-1,915.18

Finding the Fourth Proportional to 3,487.48, 4,812.42 and 1,915.18

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Solution

The fourth proportional to 3,487.48, 4,812.42 and 1,915.18 is: 2,642.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.48 : 4,812.42 = 1,915.18 : x
  2. Step 2: Convert to fraction form
    3,487.48/4,812.42 = 1,915.18/x
  3. Step 3: Cross multiply
    3,487.48x = 4,812.42 × 1,915.18
  4. Step 4: Simplify right side
    3,487.48x = 9,216,650.54
  5. Step 5: Solve for x
    x = 9,216,650.54/3,487.48
  6. Step 6: Final answer
    x = 2,642.78

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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.