Home / 2,915.40-4,374.24-1,682.16

Finding the Fourth Proportional to 2,915.40, 4,374.24 and 1,682.16

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Solution

The fourth proportional to 2,915.40, 4,374.24 and 1,682.16 is: 2,523.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.40 : 4,374.24 = 1,682.16 : x
  2. Step 2: Convert to fraction form
    2,915.40/4,374.24 = 1,682.16/x
  3. Step 3: Cross multiply
    2,915.40x = 4,374.24 × 1,682.16
  4. Step 4: Simplify right side
    2,915.40x = 7,358,171.56
  5. Step 5: Solve for x
    x = 7,358,171.56/2,915.40
  6. Step 6: Final answer
    x = 2,523.90

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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.