Home / 10,278.88-15,421.20-3,704.80

Finding the Fourth Proportional to 10,278.88, 15,421.20 and 3,704.80

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Solution

The fourth proportional to 10,278.88, 15,421.20 and 3,704.80 is: 5,558.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,278.88 : 15,421.20 = 3,704.80 : x
  2. Step 2: Convert to fraction form
    10,278.88/15,421.20 = 3,704.80/x
  3. Step 3: Cross multiply
    10,278.88x = 15,421.20 × 3,704.80
  4. Step 4: Simplify right side
    10,278.88x = 57,132,461.76
  5. Step 5: Solve for x
    x = 57,132,461.76/10,278.88
  6. Step 6: Final answer
    x = 5,558.24

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1.5x scale

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.