Home / 1,742.57-2,405.87-1,153.90

Finding the Fourth Proportional to 1,742.57, 2,405.87 and 1,153.90

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Solution

The fourth proportional to 1,742.57, 2,405.87 and 1,153.90 is: 1,593.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742.57 : 2,405.87 = 1,153.90 : x
  2. Step 2: Convert to fraction form
    1,742.57/2,405.87 = 1,153.90/x
  3. Step 3: Cross multiply
    1,742.57x = 2,405.87 × 1,153.90
  4. Step 4: Simplify right side
    1,742.57x = 2,776,133.39
  5. Step 5: Solve for x
    x = 2,776,133.39/1,742.57
  6. Step 6: Final answer
    x = 1,593.13

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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.