Home / 2,102.48-3,150.96-868.40

Finding the Fourth Proportional to 2,102.48, 3,150.96 and 868.40

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Solution

The fourth proportional to 2,102.48, 3,150.96 and 868.40 is: 1,301.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.48 : 3,150.96 = 868.40 : x
  2. Step 2: Convert to fraction form
    2,102.48/3,150.96 = 868.40/x
  3. Step 3: Cross multiply
    2,102.48x = 3,150.96 × 868.40
  4. Step 4: Simplify right side
    2,102.48x = 2,736,293.66
  5. Step 5: Solve for x
    x = 2,736,293.66/2,102.48
  6. Step 6: Final answer
    x = 1,301.46

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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.