Home / 10,278.40-15,412.20-3,703.60

Finding the Fourth Proportional to 10,278.40, 15,412.20 and 3,703.60

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Solution

The fourth proportional to 10,278.40, 15,412.20 and 3,703.60 is: 5,553.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,278.40 : 15,412.20 = 3,703.60 : x
  2. Step 2: Convert to fraction form
    10,278.40/15,412.20 = 3,703.60/x
  3. Step 3: Cross multiply
    10,278.40x = 15,412.20 × 3,703.60
  4. Step 4: Simplify right side
    10,278.40x = 57,080,623.92
  5. Step 5: Solve for x
    x = 57,080,623.92/10,278.40
  6. Step 6: Final answer
    x = 5,553.45

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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.