Home / 7,878.20-10,872.05-4,293.27

Finding the Fourth Proportional to 7,878.20, 10,872.05 and 4,293.27

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Solution

The fourth proportional to 7,878.20, 10,872.05 and 4,293.27 is: 5,924.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.20 : 10,872.05 = 4,293.27 : x
  2. Step 2: Convert to fraction form
    7,878.20/10,872.05 = 4,293.27/x
  3. Step 3: Cross multiply
    7,878.20x = 10,872.05 × 4,293.27
  4. Step 4: Simplify right side
    7,878.20x = 46,676,624.64
  5. Step 5: Solve for x
    x = 46,676,624.64/7,878.20
  6. Step 6: Final answer
    x = 5,924.79

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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.