Home / 1,259.91-1,739.52-1,126.71

Finding the Fourth Proportional to 1,259.91, 1,739.52 and 1,126.71

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Solution

The fourth proportional to 1,259.91, 1,739.52 and 1,126.71 is: 1,555.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.91 : 1,739.52 = 1,126.71 : x
  2. Step 2: Convert to fraction form
    1,259.91/1,739.52 = 1,126.71/x
  3. Step 3: Cross multiply
    1,259.91x = 1,739.52 × 1,126.71
  4. Step 4: Simplify right side
    1,259.91x = 1,959,936.11
  5. Step 5: Solve for x
    x = 1,959,936.11/1,259.91
  6. Step 6: Final answer
    x = 1,555.62

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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.