Home / 7,787.10-11,679.30-2,854.20

Finding the Fourth Proportional to 7,787.10, 11,679.30 and 2,854.20

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Solution

The fourth proportional to 7,787.10, 11,679.30 and 2,854.20 is: 4,280.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,787.10 : 11,679.30 = 2,854.20 : x
  2. Step 2: Convert to fraction form
    7,787.10/11,679.30 = 2,854.20/x
  3. Step 3: Cross multiply
    7,787.10x = 11,679.30 × 2,854.20
  4. Step 4: Simplify right side
    7,787.10x = 33,335,058.06
  5. Step 5: Solve for x
    x = 33,335,058.06/7,787.10
  6. Step 6: Final answer
    x = 4,280.81

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1.5x scale

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.