Home / 5,559.78-7,678.68-4,315.88

Finding the Fourth Proportional to 5,559.78, 7,678.68 and 4,315.88

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Solution

The fourth proportional to 5,559.78, 7,678.68 and 4,315.88 is: 5,960.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,559.78 : 7,678.68 = 4,315.88 : x
  2. Step 2: Convert to fraction form
    5,559.78/7,678.68 = 4,315.88/x
  3. Step 3: Cross multiply
    5,559.78x = 7,678.68 × 4,315.88
  4. Step 4: Simplify right side
    5,559.78x = 33,140,261.44
  5. Step 5: Solve for x
    x = 33,140,261.44/5,559.78
  6. Step 6: Final answer
    x = 5,960.71

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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.