Home / 2,862.95-4,288.30-2,161.90

Finding the Fourth Proportional to 2,862.95, 4,288.30 and 2,161.90

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Solution

The fourth proportional to 2,862.95, 4,288.30 and 2,161.90 is: 3,238.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,862.95 : 4,288.30 = 2,161.90 : x
  2. Step 2: Convert to fraction form
    2,862.95/4,288.30 = 2,161.90/x
  3. Step 3: Cross multiply
    2,862.95x = 4,288.30 × 2,161.90
  4. Step 4: Simplify right side
    2,862.95x = 9,270,875.77
  5. Step 5: Solve for x
    x = 9,270,875.77/2,862.95
  6. Step 6: Final answer
    x = 3,238.22

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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.