Home / 1,240.56-1,851.93-1,158.66

Finding the Fourth Proportional to 1,240.56, 1,851.93 and 1,158.66

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Solution

The fourth proportional to 1,240.56, 1,851.93 and 1,158.66 is: 1,729.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240.56 : 1,851.93 = 1,158.66 : x
  2. Step 2: Convert to fraction form
    1,240.56/1,851.93 = 1,158.66/x
  3. Step 3: Cross multiply
    1,240.56x = 1,851.93 × 1,158.66
  4. Step 4: Simplify right side
    1,240.56x = 2,145,757.21
  5. Step 5: Solve for x
    x = 2,145,757.21/1,240.56
  6. Step 6: Final answer
    x = 1,729.67

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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.