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Finding the Fourth Proportional to 2,358.76, 3,255.12 and 1,310.92

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Solution

The fourth proportional to 2,358.76, 3,255.12 and 1,310.92 is: 1,809.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,358.76 : 3,255.12 = 1,310.92 : x
  2. Step 2: Convert to fraction form
    2,358.76/3,255.12 = 1,310.92/x
  3. Step 3: Cross multiply
    2,358.76x = 3,255.12 × 1,310.92
  4. Step 4: Simplify right side
    2,358.76x = 4,267,201.91
  5. Step 5: Solve for x
    x = 4,267,201.91/2,358.76
  6. Step 6: Final answer
    x = 1,809.09

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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.