Home / 5,115.47-7,059.06-2,877.44

Finding the Fourth Proportional to 5,115.47, 7,059.06 and 2,877.44

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Solution

The fourth proportional to 5,115.47, 7,059.06 and 2,877.44 is: 3,970.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.47 : 7,059.06 = 2,877.44 : x
  2. Step 2: Convert to fraction form
    5,115.47/7,059.06 = 2,877.44/x
  3. Step 3: Cross multiply
    5,115.47x = 7,059.06 × 2,877.44
  4. Step 4: Simplify right side
    5,115.47x = 20,311,986.31
  5. Step 5: Solve for x
    x = 20,311,986.31/5,115.47
  6. Step 6: Final answer
    x = 3,970.70

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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.