Home / 2,825.95-3,903.45-2,170.87

Finding the Fourth Proportional to 2,825.95, 3,903.45 and 2,170.87

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Solution

The fourth proportional to 2,825.95, 3,903.45 and 2,170.87 is: 2,998.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,825.95 : 3,903.45 = 2,170.87 : x
  2. Step 2: Convert to fraction form
    2,825.95/3,903.45 = 2,170.87/x
  3. Step 3: Cross multiply
    2,825.95x = 3,903.45 × 2,170.87
  4. Step 4: Simplify right side
    2,825.95x = 8,473,882.50
  5. Step 5: Solve for x
    x = 8,473,882.50/2,825.95
  6. Step 6: Final answer
    x = 2,998.60

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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.