Home / 1,742.66-2,615.81-1,280.96

Finding the Fourth Proportional to 1,742.66, 2,615.81 and 1,280.96

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Solution

The fourth proportional to 1,742.66, 2,615.81 and 1,280.96 is: 1,922.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742.66 : 2,615.81 = 1,280.96 : x
  2. Step 2: Convert to fraction form
    1,742.66/2,615.81 = 1,280.96/x
  3. Step 3: Cross multiply
    1,742.66x = 2,615.81 × 1,280.96
  4. Step 4: Simplify right side
    1,742.66x = 3,350,728.49
  5. Step 5: Solve for x
    x = 3,350,728.49/1,742.66
  6. Step 6: Final answer
    x = 1,922.77

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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.