Home / 7,872.10-10,863.72-4,335.56

Finding the Fourth Proportional to 7,872.10, 10,863.72 and 4,335.56

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Solution

The fourth proportional to 7,872.10, 10,863.72 and 4,335.56 is: 5,983.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.10 : 10,863.72 = 4,335.56 : x
  2. Step 2: Convert to fraction form
    7,872.10/10,863.72 = 4,335.56/x
  3. Step 3: Cross multiply
    7,872.10x = 10,863.72 × 4,335.56
  4. Step 4: Simplify right side
    7,872.10x = 47,100,309.88
  5. Step 5: Solve for x
    x = 47,100,309.88/7,872.10
  6. Step 6: Final answer
    x = 5,983.20

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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.