Home / 8,579.19-12,870.42-3,031.90

Finding the Fourth Proportional to 8,579.19, 12,870.42 and 3,031.90

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Solution

The fourth proportional to 8,579.19, 12,870.42 and 3,031.90 is: 4,548.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.19 : 12,870.42 = 3,031.90 : x
  2. Step 2: Convert to fraction form
    8,579.19/12,870.42 = 3,031.90/x
  3. Step 3: Cross multiply
    8,579.19x = 12,870.42 × 3,031.90
  4. Step 4: Simplify right side
    8,579.19x = 39,021,826.40
  5. Step 5: Solve for x
    x = 39,021,826.40/8,579.19
  6. Step 6: Final answer
    x = 4,548.43

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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.