Home / 2,217.80-3,328.75-1,122.93

Finding the Fourth Proportional to 2,217.80, 3,328.75 and 1,122.93

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Solution

The fourth proportional to 2,217.80, 3,328.75 and 1,122.93 is: 1,685.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.80 : 3,328.75 = 1,122.93 : x
  2. Step 2: Convert to fraction form
    2,217.80/3,328.75 = 1,122.93/x
  3. Step 3: Cross multiply
    2,217.80x = 3,328.75 × 1,122.93
  4. Step 4: Simplify right side
    2,217.80x = 3,737,953.24
  5. Step 5: Solve for x
    x = 3,737,953.24/2,217.80
  6. Step 6: Final answer
    x = 1,685.43

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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.