Home / 5,170.58-7,135.35-2,812.72

Finding the Fourth Proportional to 5,170.58, 7,135.35 and 2,812.72

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Solution

The fourth proportional to 5,170.58, 7,135.35 and 2,812.72 is: 3,881.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.58 : 7,135.35 = 2,812.72 : x
  2. Step 2: Convert to fraction form
    5,170.58/7,135.35 = 2,812.72/x
  3. Step 3: Cross multiply
    5,170.58x = 7,135.35 × 2,812.72
  4. Step 4: Simplify right side
    5,170.58x = 20,069,714.49
  5. Step 5: Solve for x
    x = 20,069,714.49/5,170.58
  6. Step 6: Final answer
    x = 3,881.52

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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.