Home / 5,430.26-8,139.08-2,309.28

Finding the Fourth Proportional to 5,430.26, 8,139.08 and 2,309.28

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Solution

The fourth proportional to 5,430.26, 8,139.08 and 2,309.28 is: 3,461.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.26 : 8,139.08 = 2,309.28 : x
  2. Step 2: Convert to fraction form
    5,430.26/8,139.08 = 2,309.28/x
  3. Step 3: Cross multiply
    5,430.26x = 8,139.08 × 2,309.28
  4. Step 4: Simplify right side
    5,430.26x = 18,795,414.66
  5. Step 5: Solve for x
    x = 18,795,414.66/5,430.26
  6. Step 6: Final answer
    x = 3,461.24

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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.