Home / 2,680.29-3,699.03-1,561.33

Finding the Fourth Proportional to 2,680.29, 3,699.03 and 1,561.33

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Solution

The fourth proportional to 2,680.29, 3,699.03 and 1,561.33 is: 2,154.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.29 : 3,699.03 = 1,561.33 : x
  2. Step 2: Convert to fraction form
    2,680.29/3,699.03 = 1,561.33/x
  3. Step 3: Cross multiply
    2,680.29x = 3,699.03 × 1,561.33
  4. Step 4: Simplify right side
    2,680.29x = 5,775,398.70
  5. Step 5: Solve for x
    x = 5,775,398.70/2,680.29
  6. Step 6: Final answer
    x = 2,154.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.