Home / 1,370.92-2,065.64-1,132.78

Finding the Fourth Proportional to 1,370.92, 2,065.64 and 1,132.78

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Solution

The fourth proportional to 1,370.92, 2,065.64 and 1,132.78 is: 1,706.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.92 : 2,065.64 = 1,132.78 : x
  2. Step 2: Convert to fraction form
    1,370.92/2,065.64 = 1,132.78/x
  3. Step 3: Cross multiply
    1,370.92x = 2,065.64 × 1,132.78
  4. Step 4: Simplify right side
    1,370.92x = 2,339,915.68
  5. Step 5: Solve for x
    x = 2,339,915.68/1,370.92
  6. Step 6: Final answer
    x = 1,706.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.