Home / 1,426.93-2,140.41-696.58

Finding the Fourth Proportional to 1,426.93, 2,140.41 and 696.58

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Solution

The fourth proportional to 1,426.93, 2,140.41 and 696.58 is: 1,044.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.93 : 2,140.41 = 696.58 : x
  2. Step 2: Convert to fraction form
    1,426.93/2,140.41 = 696.58/x
  3. Step 3: Cross multiply
    1,426.93x = 2,140.41 × 696.58
  4. Step 4: Simplify right side
    1,426.93x = 1,490,966.80
  5. Step 5: Solve for x
    x = 1,490,966.80/1,426.93
  6. Step 6: Final answer
    x = 1,044.88

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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.