Home / 3,512.60-5,267.90-1,319.72

Finding the Fourth Proportional to 3,512.60, 5,267.90 and 1,319.72

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Solution

The fourth proportional to 3,512.60, 5,267.90 and 1,319.72 is: 1,979.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,512.60 : 5,267.90 = 1,319.72 : x
  2. Step 2: Convert to fraction form
    3,512.60/5,267.90 = 1,319.72/x
  3. Step 3: Cross multiply
    3,512.60x = 5,267.90 × 1,319.72
  4. Step 4: Simplify right side
    3,512.60x = 6,952,152.99
  5. Step 5: Solve for x
    x = 6,952,152.99/3,512.60
  6. Step 6: Final answer
    x = 1,979.20

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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.