Home / 1,276.29-1,760.40-1,110.24

Finding the Fourth Proportional to 1,276.29, 1,760.40 and 1,110.24

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Solution

The fourth proportional to 1,276.29, 1,760.40 and 1,110.24 is: 1,531.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.29 : 1,760.40 = 1,110.24 : x
  2. Step 2: Convert to fraction form
    1,276.29/1,760.40 = 1,110.24/x
  3. Step 3: Cross multiply
    1,276.29x = 1,760.40 × 1,110.24
  4. Step 4: Simplify right side
    1,276.29x = 1,954,466.50
  5. Step 5: Solve for x
    x = 1,954,466.50/1,276.29
  6. Step 6: Final answer
    x = 1,531.37

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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.