Home / 1,426.36-1,966.26-1,131.70

Finding the Fourth Proportional to 1,426.36, 1,966.26 and 1,131.70

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Solution

The fourth proportional to 1,426.36, 1,966.26 and 1,131.70 is: 1,560.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.36 : 1,966.26 = 1,131.70 : x
  2. Step 2: Convert to fraction form
    1,426.36/1,966.26 = 1,131.70/x
  3. Step 3: Cross multiply
    1,426.36x = 1,966.26 × 1,131.70
  4. Step 4: Simplify right side
    1,426.36x = 2,225,216.44
  5. Step 5: Solve for x
    x = 2,225,216.44/1,426.36
  6. Step 6: Final answer
    x = 1,560.07

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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.