Home / 4,915.10-7,371.30-2,140.31

Finding the Fourth Proportional to 4,915.10, 7,371.30 and 2,140.31

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Solution

The fourth proportional to 4,915.10, 7,371.30 and 2,140.31 is: 3,209.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,915.10 : 7,371.30 = 2,140.31 : x
  2. Step 2: Convert to fraction form
    4,915.10/7,371.30 = 2,140.31/x
  3. Step 3: Cross multiply
    4,915.10x = 7,371.30 × 2,140.31
  4. Step 4: Simplify right side
    4,915.10x = 15,776,867.10
  5. Step 5: Solve for x
    x = 15,776,867.10/4,915.10
  6. Step 6: Final answer
    x = 3,209.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.