Home / 5,858.40-8,787.68-2,159.20

Finding the Fourth Proportional to 5,858.40, 8,787.68 and 2,159.20

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Solution

The fourth proportional to 5,858.40, 8,787.68 and 2,159.20 is: 3,238.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,858.40 : 8,787.68 = 2,159.20 : x
  2. Step 2: Convert to fraction form
    5,858.40/8,787.68 = 2,159.20/x
  3. Step 3: Cross multiply
    5,858.40x = 8,787.68 × 2,159.20
  4. Step 4: Simplify right side
    5,858.40x = 18,974,358.66
  5. Step 5: Solve for x
    x = 18,974,358.66/5,858.40
  6. Step 6: Final answer
    x = 3,238.83

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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.