Home / 2,319.26-3,478.41-1,931.74

Finding the Fourth Proportional to 2,319.26, 3,478.41 and 1,931.74

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Solution

The fourth proportional to 2,319.26, 3,478.41 and 1,931.74 is: 2,897.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.26 : 3,478.41 = 1,931.74 : x
  2. Step 2: Convert to fraction form
    2,319.26/3,478.41 = 1,931.74/x
  3. Step 3: Cross multiply
    2,319.26x = 3,478.41 × 1,931.74
  4. Step 4: Simplify right side
    2,319.26x = 6,719,375.04
  5. Step 5: Solve for x
    x = 6,719,375.04/2,319.26
  6. Step 6: Final answer
    x = 2,897.21

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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.