Home / 2,781.95-4,172.92-1,485.95

Finding the Fourth Proportional to 2,781.95, 4,172.92 and 1,485.95

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Solution

The fourth proportional to 2,781.95, 4,172.92 and 1,485.95 is: 2,228.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.95 : 4,172.92 = 1,485.95 : x
  2. Step 2: Convert to fraction form
    2,781.95/4,172.92 = 1,485.95/x
  3. Step 3: Cross multiply
    2,781.95x = 4,172.92 × 1,485.95
  4. Step 4: Simplify right side
    2,781.95x = 6,200,725.89
  5. Step 5: Solve for x
    x = 6,200,725.89/2,781.95
  6. Step 6: Final answer
    x = 2,228.92

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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.