Home / 8,670.20-13,005.96-3,124.08

Finding the Fourth Proportional to 8,670.20, 13,005.96 and 3,124.08

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Solution

The fourth proportional to 8,670.20, 13,005.96 and 3,124.08 is: 4,686.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.20 : 13,005.96 = 3,124.08 : x
  2. Step 2: Convert to fraction form
    8,670.20/13,005.96 = 3,124.08/x
  3. Step 3: Cross multiply
    8,670.20x = 13,005.96 × 3,124.08
  4. Step 4: Simplify right side
    8,670.20x = 40,631,659.52
  5. Step 5: Solve for x
    x = 40,631,659.52/8,670.20
  6. Step 6: Final answer
    x = 4,686.36

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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.