Home / 2,915.60-4,373.40-2,040.80

Finding the Fourth Proportional to 2,915.60, 4,373.40 and 2,040.80

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Solution

The fourth proportional to 2,915.60, 4,373.40 and 2,040.80 is: 3,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.60 : 4,373.40 = 2,040.80 : x
  2. Step 2: Convert to fraction form
    2,915.60/4,373.40 = 2,040.80/x
  3. Step 3: Cross multiply
    2,915.60x = 4,373.40 × 2,040.80
  4. Step 4: Simplify right side
    2,915.60x = 8,925,234.72
  5. Step 5: Solve for x
    x = 8,925,234.72/2,915.60
  6. Step 6: Final answer
    x = 3,061.20

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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.