Home / 7,779.96-10,727.85-5,257.70

Finding the Fourth Proportional to 7,779.96, 10,727.85 and 5,257.70

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Solution

The fourth proportional to 7,779.96, 10,727.85 and 5,257.70 is: 7,249.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.96 : 10,727.85 = 5,257.70 : x
  2. Step 2: Convert to fraction form
    7,779.96/10,727.85 = 5,257.70/x
  3. Step 3: Cross multiply
    7,779.96x = 10,727.85 × 5,257.70
  4. Step 4: Simplify right side
    7,779.96x = 56,403,824.05
  5. Step 5: Solve for x
    x = 56,403,824.05/7,779.96
  6. Step 6: Final answer
    x = 7,249.88

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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.