Home / 1,561.22-2,341.80-739.88

Finding the Fourth Proportional to 1,561.22, 2,341.80 and 739.88

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Solution

The fourth proportional to 1,561.22, 2,341.80 and 739.88 is: 1,109.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.22 : 2,341.80 = 739.88 : x
  2. Step 2: Convert to fraction form
    1,561.22/2,341.80 = 739.88/x
  3. Step 3: Cross multiply
    1,561.22x = 2,341.80 × 739.88
  4. Step 4: Simplify right side
    1,561.22x = 1,732,650.98
  5. Step 5: Solve for x
    x = 1,732,650.98/1,561.22
  6. Step 6: Final answer
    x = 1,109.81

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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.