Home / 5,705.20-7,874.60-5,114.72

Finding the Fourth Proportional to 5,705.20, 7,874.60 and 5,114.72

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Solution

The fourth proportional to 5,705.20, 7,874.60 and 5,114.72 is: 7,059.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,705.20 : 7,874.60 = 5,114.72 : x
  2. Step 2: Convert to fraction form
    5,705.20/7,874.60 = 5,114.72/x
  3. Step 3: Cross multiply
    5,705.20x = 7,874.60 × 5,114.72
  4. Step 4: Simplify right side
    5,705.20x = 40,276,374.11
  5. Step 5: Solve for x
    x = 40,276,374.11/5,705.20
  6. Step 6: Final answer
    x = 7,059.59

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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.