Home / 5,430.92-8,139.87-2,799.68

Finding the Fourth Proportional to 5,430.92, 8,139.87 and 2,799.68

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Solution

The fourth proportional to 5,430.92, 8,139.87 and 2,799.68 is: 4,196.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.92 : 8,139.87 = 2,799.68 : x
  2. Step 2: Convert to fraction form
    5,430.92/8,139.87 = 2,799.68/x
  3. Step 3: Cross multiply
    5,430.92x = 8,139.87 × 2,799.68
  4. Step 4: Simplify right side
    5,430.92x = 22,789,031.24
  5. Step 5: Solve for x
    x = 22,789,031.24/5,430.92
  6. Step 6: Final answer
    x = 4,196.16

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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.