Home / 5,115.78-7,060.96-2,992.30

Finding the Fourth Proportional to 5,115.78, 7,060.96 and 2,992.30

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Solution

The fourth proportional to 5,115.78, 7,060.96 and 2,992.30 is: 4,130.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.78 : 7,060.96 = 2,992.30 : x
  2. Step 2: Convert to fraction form
    5,115.78/7,060.96 = 2,992.30/x
  3. Step 3: Cross multiply
    5,115.78x = 7,060.96 × 2,992.30
  4. Step 4: Simplify right side
    5,115.78x = 21,128,510.61
  5. Step 5: Solve for x
    x = 21,128,510.61/5,115.78
  6. Step 6: Final answer
    x = 4,130.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.