Home / 1,156.68-1,734.21-426.06

Finding the Fourth Proportional to 1,156.68, 1,734.21 and 426.06

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Solution

The fourth proportional to 1,156.68, 1,734.21 and 426.06 is: 638.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.68 : 1,734.21 = 426.06 : x
  2. Step 2: Convert to fraction form
    1,156.68/1,734.21 = 426.06/x
  3. Step 3: Cross multiply
    1,156.68x = 1,734.21 × 426.06
  4. Step 4: Simplify right side
    1,156.68x = 738,877.51
  5. Step 5: Solve for x
    x = 738,877.51/1,156.68
  6. Step 6: Final answer
    x = 638.79

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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.