Home / 2,378.64-3,279.28-1,669.52

Finding the Fourth Proportional to 2,378.64, 3,279.28 and 1,669.52

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Solution

The fourth proportional to 2,378.64, 3,279.28 and 1,669.52 is: 2,301.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.64 : 3,279.28 = 1,669.52 : x
  2. Step 2: Convert to fraction form
    2,378.64/3,279.28 = 1,669.52/x
  3. Step 3: Cross multiply
    2,378.64x = 3,279.28 × 1,669.52
  4. Step 4: Simplify right side
    2,378.64x = 5,474,823.55
  5. Step 5: Solve for x
    x = 5,474,823.55/2,378.64
  6. Step 6: Final answer
    x = 2,301.66

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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.