Home / 4,390.78-6,578.72-2,655.76

Finding the Fourth Proportional to 4,390.78, 6,578.72 and 2,655.76

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Solution

The fourth proportional to 4,390.78, 6,578.72 and 2,655.76 is: 3,979.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,390.78 : 6,578.72 = 2,655.76 : x
  2. Step 2: Convert to fraction form
    4,390.78/6,578.72 = 2,655.76/x
  3. Step 3: Cross multiply
    4,390.78x = 6,578.72 × 2,655.76
  4. Step 4: Simplify right side
    4,390.78x = 17,471,501.43
  5. Step 5: Solve for x
    x = 17,471,501.43/4,390.78
  6. Step 6: Final answer
    x = 3,979.13

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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.