Home / 5,115.46-7,059.63-2,877.34

Finding the Fourth Proportional to 5,115.46, 7,059.63 and 2,877.34

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Solution

The fourth proportional to 5,115.46, 7,059.63 and 2,877.34 is: 3,970.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.46 : 7,059.63 = 2,877.34 : x
  2. Step 2: Convert to fraction form
    5,115.46/7,059.63 = 2,877.34/x
  3. Step 3: Cross multiply
    5,115.46x = 7,059.63 × 2,877.34
  4. Step 4: Simplify right side
    5,115.46x = 20,312,955.78
  5. Step 5: Solve for x
    x = 20,312,955.78/5,115.46
  6. Step 6: Final answer
    x = 3,970.90

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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.