Home / 8,686.40-13,026.36-3,490.52

Finding the Fourth Proportional to 8,686.40, 13,026.36 and 3,490.52

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Solution

The fourth proportional to 8,686.40, 13,026.36 and 3,490.52 is: 5,234.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.40 : 13,026.36 = 3,490.52 : x
  2. Step 2: Convert to fraction form
    8,686.40/13,026.36 = 3,490.52/x
  3. Step 3: Cross multiply
    8,686.40x = 13,026.36 × 3,490.52
  4. Step 4: Simplify right side
    8,686.40x = 45,468,770.11
  5. Step 5: Solve for x
    x = 45,468,770.11/8,686.40
  6. Step 6: Final answer
    x = 5,234.48

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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.