Home / 8,730.40-13,095.60-2,489.80

Finding the Fourth Proportional to 8,730.40, 13,095.60 and 2,489.80

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Solution

The fourth proportional to 8,730.40, 13,095.60 and 2,489.80 is: 3,734.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,730.40 : 13,095.60 = 2,489.80 : x
  2. Step 2: Convert to fraction form
    8,730.40/13,095.60 = 2,489.80/x
  3. Step 3: Cross multiply
    8,730.40x = 13,095.60 × 2,489.80
  4. Step 4: Simplify right side
    8,730.40x = 32,605,424.88
  5. Step 5: Solve for x
    x = 32,605,424.88/8,730.40
  6. Step 6: Final answer
    x = 3,734.70

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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.