Home / 3,148.40-4,720.14-1,915.52

Finding the Fourth Proportional to 3,148.40, 4,720.14 and 1,915.52

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Solution

The fourth proportional to 3,148.40, 4,720.14 and 1,915.52 is: 2,871.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,148.40 : 4,720.14 = 1,915.52 : x
  2. Step 2: Convert to fraction form
    3,148.40/4,720.14 = 1,915.52/x
  3. Step 3: Cross multiply
    3,148.40x = 4,720.14 × 1,915.52
  4. Step 4: Simplify right side
    3,148.40x = 9,041,522.57
  5. Step 5: Solve for x
    x = 9,041,522.57/3,148.40
  6. Step 6: Final answer
    x = 2,871.78

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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.