Home / 5,305.38-7,321.52-2,915.60

Finding the Fourth Proportional to 5,305.38, 7,321.52 and 2,915.60

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Solution

The fourth proportional to 5,305.38, 7,321.52 and 2,915.60 is: 4,023.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,305.38 : 7,321.52 = 2,915.60 : x
  2. Step 2: Convert to fraction form
    5,305.38/7,321.52 = 2,915.60/x
  3. Step 3: Cross multiply
    5,305.38x = 7,321.52 × 2,915.60
  4. Step 4: Simplify right side
    5,305.38x = 21,346,623.71
  5. Step 5: Solve for x
    x = 21,346,623.71/5,305.38
  6. Step 6: Final answer
    x = 4,023.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.