Home / 8,686.18-13,026.60-3,138.82

Finding the Fourth Proportional to 8,686.18, 13,026.60 and 3,138.82

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Solution

The fourth proportional to 8,686.18, 13,026.60 and 3,138.82 is: 4,707.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.18 : 13,026.60 = 3,138.82 : x
  2. Step 2: Convert to fraction form
    8,686.18/13,026.60 = 3,138.82/x
  3. Step 3: Cross multiply
    8,686.18x = 13,026.60 × 3,138.82
  4. Step 4: Simplify right side
    8,686.18x = 40,888,152.61
  5. Step 5: Solve for x
    x = 40,888,152.61/8,686.18
  6. Step 6: Final answer
    x = 4,707.27

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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.