Home / 2,223.76-3,331.30-1,915.60

Finding the Fourth Proportional to 2,223.76, 3,331.30 and 1,915.60

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Solution

The fourth proportional to 2,223.76, 3,331.30 and 1,915.60 is: 2,869.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.76 : 3,331.30 = 1,915.60 : x
  2. Step 2: Convert to fraction form
    2,223.76/3,331.30 = 1,915.60/x
  3. Step 3: Cross multiply
    2,223.76x = 3,331.30 × 1,915.60
  4. Step 4: Simplify right side
    2,223.76x = 6,381,438.28
  5. Step 5: Solve for x
    x = 6,381,438.28/2,223.76
  6. Step 6: Final answer
    x = 2,869.66

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1.5x scale

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.