Home / 1,282.85-1,915.62-1,275.17

Finding the Fourth Proportional to 1,282.85, 1,915.62 and 1,275.17

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Solution

The fourth proportional to 1,282.85, 1,915.62 and 1,275.17 is: 1,904.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.85 : 1,915.62 = 1,275.17 : x
  2. Step 2: Convert to fraction form
    1,282.85/1,915.62 = 1,275.17/x
  3. Step 3: Cross multiply
    1,282.85x = 1,915.62 × 1,275.17
  4. Step 4: Simplify right side
    1,282.85x = 2,442,741.16
  5. Step 5: Solve for x
    x = 2,442,741.16/1,282.85
  6. Step 6: Final answer
    x = 1,904.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.