Home / 8,659.13-12,985.50-3,110.98

Finding the Fourth Proportional to 8,659.13, 12,985.50 and 3,110.98

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Solution

The fourth proportional to 8,659.13, 12,985.50 and 3,110.98 is: 4,665.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,659.13 : 12,985.50 = 3,110.98 : x
  2. Step 2: Convert to fraction form
    8,659.13/12,985.50 = 3,110.98/x
  3. Step 3: Cross multiply
    8,659.13x = 12,985.50 × 3,110.98
  4. Step 4: Simplify right side
    8,659.13x = 40,397,615.24
  5. Step 5: Solve for x
    x = 40,397,615.24/8,659.13
  6. Step 6: Final answer
    x = 4,665.32

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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.