Home / 2,101.74-3,152.67-868.30

Finding the Fourth Proportional to 2,101.74, 3,152.67 and 868.30

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Solution

The fourth proportional to 2,101.74, 3,152.67 and 868.30 is: 1,302.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.74 : 3,152.67 = 868.30 : x
  2. Step 2: Convert to fraction form
    2,101.74/3,152.67 = 868.30/x
  3. Step 3: Cross multiply
    2,101.74x = 3,152.67 × 868.30
  4. Step 4: Simplify right side
    2,101.74x = 2,737,463.36
  5. Step 5: Solve for x
    x = 2,737,463.36/2,101.74
  6. Step 6: Final answer
    x = 1,302.47

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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.