Home / 1,278.91-1,915.26-1,246.06

Finding the Fourth Proportional to 1,278.91, 1,915.26 and 1,246.06

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Solution

The fourth proportional to 1,278.91, 1,915.26 and 1,246.06 is: 1,866.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278.91 : 1,915.26 = 1,246.06 : x
  2. Step 2: Convert to fraction form
    1,278.91/1,915.26 = 1,246.06/x
  3. Step 3: Cross multiply
    1,278.91x = 1,915.26 × 1,246.06
  4. Step 4: Simplify right side
    1,278.91x = 2,386,528.88
  5. Step 5: Solve for x
    x = 2,386,528.88/1,278.91
  6. Step 6: Final answer
    x = 1,866.06

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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.