Home / 10,080.78-15,120.68-3,060.48

Finding the Fourth Proportional to 10,080.78, 15,120.68 and 3,060.48

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Solution

The fourth proportional to 10,080.78, 15,120.68 and 3,060.48 is: 4,590.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,080.78 : 15,120.68 = 3,060.48 : x
  2. Step 2: Convert to fraction form
    10,080.78/15,120.68 = 3,060.48/x
  3. Step 3: Cross multiply
    10,080.78x = 15,120.68 × 3,060.48
  4. Step 4: Simplify right side
    10,080.78x = 46,276,538.73
  5. Step 5: Solve for x
    x = 46,276,538.73/10,080.78
  6. Step 6: Final answer
    x = 4,590.57

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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.