Home / 2,269.69-3,398.05-1,728.21

Finding the Fourth Proportional to 2,269.69, 3,398.05 and 1,728.21

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Solution

The fourth proportional to 2,269.69, 3,398.05 and 1,728.21 is: 2,587.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,269.69 : 3,398.05 = 1,728.21 : x
  2. Step 2: Convert to fraction form
    2,269.69/3,398.05 = 1,728.21/x
  3. Step 3: Cross multiply
    2,269.69x = 3,398.05 × 1,728.21
  4. Step 4: Simplify right side
    2,269.69x = 5,872,543.99
  5. Step 5: Solve for x
    x = 5,872,543.99/2,269.69
  6. Step 6: Final answer
    x = 2,587.38

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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.