Home / 1,561.22-2,330.96-1,405.70

Finding the Fourth Proportional to 1,561.22, 2,330.96 and 1,405.70

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Solution

The fourth proportional to 1,561.22, 2,330.96 and 1,405.70 is: 2,098.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.22 : 2,330.96 = 1,405.70 : x
  2. Step 2: Convert to fraction form
    1,561.22/2,330.96 = 1,405.70/x
  3. Step 3: Cross multiply
    1,561.22x = 2,330.96 × 1,405.70
  4. Step 4: Simplify right side
    1,561.22x = 3,276,630.47
  5. Step 5: Solve for x
    x = 3,276,630.47/1,561.22
  6. Step 6: Final answer
    x = 2,098.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.