Home / 1,260.97-1,890.08-1,077.81

Finding the Fourth Proportional to 1,260.97, 1,890.08 and 1,077.81

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Solution

The fourth proportional to 1,260.97, 1,890.08 and 1,077.81 is: 1,615.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.97 : 1,890.08 = 1,077.81 : x
  2. Step 2: Convert to fraction form
    1,260.97/1,890.08 = 1,077.81/x
  3. Step 3: Cross multiply
    1,260.97x = 1,890.08 × 1,077.81
  4. Step 4: Simplify right side
    1,260.97x = 2,037,132.29
  5. Step 5: Solve for x
    x = 2,037,132.29/1,260.97
  6. Step 6: Final answer
    x = 1,615.53

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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.