Home / 2,775.91-3,825.49-1,988.59

Finding the Fourth Proportional to 2,775.91, 3,825.49 and 1,988.59

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Solution

The fourth proportional to 2,775.91, 3,825.49 and 1,988.59 is: 2,740.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.91 : 3,825.49 = 1,988.59 : x
  2. Step 2: Convert to fraction form
    2,775.91/3,825.49 = 1,988.59/x
  3. Step 3: Cross multiply
    2,775.91x = 3,825.49 × 1,988.59
  4. Step 4: Simplify right side
    2,775.91x = 7,607,331.16
  5. Step 5: Solve for x
    x = 7,607,331.16/2,775.91
  6. Step 6: Final answer
    x = 2,740.48

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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.