Home / 8,139.96-12,210.85-2,592.02

Finding the Fourth Proportional to 8,139.96, 12,210.85 and 2,592.02

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Solution

The fourth proportional to 8,139.96, 12,210.85 and 2,592.02 is: 3,888.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.96 : 12,210.85 = 2,592.02 : x
  2. Step 2: Convert to fraction form
    8,139.96/12,210.85 = 2,592.02/x
  3. Step 3: Cross multiply
    8,139.96x = 12,210.85 × 2,592.02
  4. Step 4: Simplify right side
    8,139.96x = 31,650,791.46
  5. Step 5: Solve for x
    x = 31,650,791.46/8,139.96
  6. Step 6: Final answer
    x = 3,888.32

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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.