Home / 3,181.95-4,389.53-2,761.74

Finding the Fourth Proportional to 3,181.95, 4,389.53 and 2,761.74

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Solution

The fourth proportional to 3,181.95, 4,389.53 and 2,761.74 is: 3,809.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.95 : 4,389.53 = 2,761.74 : x
  2. Step 2: Convert to fraction form
    3,181.95/4,389.53 = 2,761.74/x
  3. Step 3: Cross multiply
    3,181.95x = 4,389.53 × 2,761.74
  4. Step 4: Simplify right side
    3,181.95x = 12,122,726.77
  5. Step 5: Solve for x
    x = 12,122,726.77/3,181.95
  6. Step 6: Final answer
    x = 3,809.84

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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.