Home / 3,487.34-4,812.82-1,915.76

Finding the Fourth Proportional to 3,487.34, 4,812.82 and 1,915.76

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Solution

The fourth proportional to 3,487.34, 4,812.82 and 1,915.76 is: 2,643.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.34 : 4,812.82 = 1,915.76 : x
  2. Step 2: Convert to fraction form
    3,487.34/4,812.82 = 1,915.76/x
  3. Step 3: Cross multiply
    3,487.34x = 4,812.82 × 1,915.76
  4. Step 4: Simplify right side
    3,487.34x = 9,220,179.19
  5. Step 5: Solve for x
    x = 9,220,179.19/3,487.34
  6. Step 6: Final answer
    x = 2,643.90

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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.