Home / 2,132.76-3,200.13-1,312.64

Finding the Fourth Proportional to 2,132.76, 3,200.13 and 1,312.64

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Solution

The fourth proportional to 2,132.76, 3,200.13 and 1,312.64 is: 1,969.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.76 : 3,200.13 = 1,312.64 : x
  2. Step 2: Convert to fraction form
    2,132.76/3,200.13 = 1,312.64/x
  3. Step 3: Cross multiply
    2,132.76x = 3,200.13 × 1,312.64
  4. Step 4: Simplify right side
    2,132.76x = 4,200,602.64
  5. Step 5: Solve for x
    x = 4,200,602.64/2,132.76
  6. Step 6: Final answer
    x = 1,969.56

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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.