Home / 2,138.26-2,951.52-1,253.74

Finding the Fourth Proportional to 2,138.26, 2,951.52 and 1,253.74

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Solution

The fourth proportional to 2,138.26, 2,951.52 and 1,253.74 is: 1,730.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.26 : 2,951.52 = 1,253.74 : x
  2. Step 2: Convert to fraction form
    2,138.26/2,951.52 = 1,253.74/x
  3. Step 3: Cross multiply
    2,138.26x = 2,951.52 × 1,253.74
  4. Step 4: Simplify right side
    2,138.26x = 3,700,423.93
  5. Step 5: Solve for x
    x = 3,700,423.93/2,138.26
  6. Step 6: Final answer
    x = 1,730.58

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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.