Home / 9,120.78-13,686.65-3,277.85

Finding the Fourth Proportional to 9,120.78, 13,686.65 and 3,277.85

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Solution

The fourth proportional to 9,120.78, 13,686.65 and 3,277.85 is: 4,918.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.78 : 13,686.65 = 3,277.85 : x
  2. Step 2: Convert to fraction form
    9,120.78/13,686.65 = 3,277.85/x
  3. Step 3: Cross multiply
    9,120.78x = 13,686.65 × 3,277.85
  4. Step 4: Simplify right side
    9,120.78x = 44,862,700.88
  5. Step 5: Solve for x
    x = 44,862,700.88/9,120.78
  6. Step 6: Final answer
    x = 4,918.74

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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.