Home / 5,430.45-8,139.38-2,502.61

Finding the Fourth Proportional to 5,430.45, 8,139.38 and 2,502.61

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Solution

The fourth proportional to 5,430.45, 8,139.38 and 2,502.61 is: 3,751.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.45 : 8,139.38 = 2,502.61 : x
  2. Step 2: Convert to fraction form
    5,430.45/8,139.38 = 2,502.61/x
  3. Step 3: Cross multiply
    5,430.45x = 8,139.38 × 2,502.61
  4. Step 4: Simplify right side
    5,430.45x = 20,369,693.78
  5. Step 5: Solve for x
    x = 20,369,693.78/5,430.45
  6. Step 6: Final answer
    x = 3,751.01

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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.