Home / 5,115.06-7,059.05-2,877.63

Finding the Fourth Proportional to 5,115.06, 7,059.05 and 2,877.63

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Solution

The fourth proportional to 5,115.06, 7,059.05 and 2,877.63 is: 3,971.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.06 : 7,059.05 = 2,877.63 : x
  2. Step 2: Convert to fraction form
    5,115.06/7,059.05 = 2,877.63/x
  3. Step 3: Cross multiply
    5,115.06x = 7,059.05 × 2,877.63
  4. Step 4: Simplify right side
    5,115.06x = 20,313,319.66
  5. Step 5: Solve for x
    x = 20,313,319.66/5,115.06
  6. Step 6: Final answer
    x = 3,971.28

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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.