Home / 2,342.39-3,515.72-1,247.68

Finding the Fourth Proportional to 2,342.39, 3,515.72 and 1,247.68

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Solution

The fourth proportional to 2,342.39, 3,515.72 and 1,247.68 is: 1,872.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,342.39 : 3,515.72 = 1,247.68 : x
  2. Step 2: Convert to fraction form
    2,342.39/3,515.72 = 1,247.68/x
  3. Step 3: Cross multiply
    2,342.39x = 3,515.72 × 1,247.68
  4. Step 4: Simplify right side
    2,342.39x = 4,386,478.50
  5. Step 5: Solve for x
    x = 4,386,478.50/2,342.39
  6. Step 6: Final answer
    x = 1,872.65

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1.5x scale

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.