Home / 3,921.12-5,876.16-3,095.76

Finding the Fourth Proportional to 3,921.12, 5,876.16 and 3,095.76

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Solution

The fourth proportional to 3,921.12, 5,876.16 and 3,095.76 is: 4,639.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.12 : 5,876.16 = 3,095.76 : x
  2. Step 2: Convert to fraction form
    3,921.12/5,876.16 = 3,095.76/x
  3. Step 3: Cross multiply
    3,921.12x = 5,876.16 × 3,095.76
  4. Step 4: Simplify right side
    3,921.12x = 18,191,181.08
  5. Step 5: Solve for x
    x = 18,191,181.08/3,921.12
  6. Step 6: Final answer
    x = 4,639.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.