Home / 3,189.04-4,393.91-2,787.68

Finding the Fourth Proportional to 3,189.04, 4,393.91 and 2,787.68

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Solution

The fourth proportional to 3,189.04, 4,393.91 and 2,787.68 is: 3,840.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.04 : 4,393.91 = 2,787.68 : x
  2. Step 2: Convert to fraction form
    3,189.04/4,393.91 = 2,787.68/x
  3. Step 3: Cross multiply
    3,189.04x = 4,393.91 × 2,787.68
  4. Step 4: Simplify right side
    3,189.04x = 12,248,832.98
  5. Step 5: Solve for x
    x = 12,248,832.98/3,189.04
  6. Step 6: Final answer
    x = 3,840.92

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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.