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Finding the Fourth Proportional to 2,610.40, 3,915.60 and 662.76

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Solution

The fourth proportional to 2,610.40, 3,915.60 and 662.76 is: 994.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,610.40 : 3,915.60 = 662.76 : x
  2. Step 2: Convert to fraction form
    2,610.40/3,915.60 = 662.76/x
  3. Step 3: Cross multiply
    2,610.40x = 3,915.60 × 662.76
  4. Step 4: Simplify right side
    2,610.40x = 2,595,103.06
  5. Step 5: Solve for x
    x = 2,595,103.06/2,610.40
  6. Step 6: Final answer
    x = 994.14

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Similar ratio
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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.