Home / 5,432.09-8,142.57-2,140.65

Finding the Fourth Proportional to 5,432.09, 8,142.57 and 2,140.65

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Solution

The fourth proportional to 5,432.09, 8,142.57 and 2,140.65 is: 3,208.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,432.09 : 8,142.57 = 2,140.65 : x
  2. Step 2: Convert to fraction form
    5,432.09/8,142.57 = 2,140.65/x
  3. Step 3: Cross multiply
    5,432.09x = 8,142.57 × 2,140.65
  4. Step 4: Simplify right side
    5,432.09x = 17,430,392.47
  5. Step 5: Solve for x
    x = 17,430,392.47/5,432.09
  6. Step 6: Final answer
    x = 3,208.78

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1.5x scale

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.