Home / 8,705.96-12,015.54-5,170.04

Finding the Fourth Proportional to 8,705.96, 12,015.54 and 5,170.04

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Solution

The fourth proportional to 8,705.96, 12,015.54 and 5,170.04 is: 7,135.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.96 : 12,015.54 = 5,170.04 : x
  2. Step 2: Convert to fraction form
    8,705.96/12,015.54 = 5,170.04/x
  3. Step 3: Cross multiply
    8,705.96x = 12,015.54 × 5,170.04
  4. Step 4: Simplify right side
    8,705.96x = 62,120,822.42
  5. Step 5: Solve for x
    x = 62,120,822.42/8,705.96
  6. Step 6: Final answer
    x = 7,135.44

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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.