Home / 2,142.49-3,212.48-1,045.75

Finding the Fourth Proportional to 2,142.49, 3,212.48 and 1,045.75

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Solution

The fourth proportional to 2,142.49, 3,212.48 and 1,045.75 is: 1,568.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.49 : 3,212.48 = 1,045.75 : x
  2. Step 2: Convert to fraction form
    2,142.49/3,212.48 = 1,045.75/x
  3. Step 3: Cross multiply
    2,142.49x = 3,212.48 × 1,045.75
  4. Step 4: Simplify right side
    2,142.49x = 3,359,445.73
  5. Step 5: Solve for x
    x = 3,359,445.73/2,142.49
  6. Step 6: Final answer
    x = 1,568.01

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1.5x scale

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.