Home / 10,440.60-15,661.20-2,649.40

Finding the Fourth Proportional to 10,440.60, 15,661.20 and 2,649.40

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Solution

The fourth proportional to 10,440.60, 15,661.20 and 2,649.40 is: 3,974.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,440.60 : 15,661.20 = 2,649.40 : x
  2. Step 2: Convert to fraction form
    10,440.60/15,661.20 = 2,649.40/x
  3. Step 3: Cross multiply
    10,440.60x = 15,661.20 × 2,649.40
  4. Step 4: Simplify right side
    10,440.60x = 41,492,783.28
  5. Step 5: Solve for x
    x = 41,492,783.28/10,440.60
  6. Step 6: Final answer
    x = 3,974.18

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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.