Home / 5,129.92-7,685.70-4,392.28

Finding the Fourth Proportional to 5,129.92, 7,685.70 and 4,392.28

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Solution

The fourth proportional to 5,129.92, 7,685.70 and 4,392.28 is: 6,580.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.92 : 7,685.70 = 4,392.28 : x
  2. Step 2: Convert to fraction form
    5,129.92/7,685.70 = 4,392.28/x
  3. Step 3: Cross multiply
    5,129.92x = 7,685.70 × 4,392.28
  4. Step 4: Simplify right side
    5,129.92x = 33,757,746.40
  5. Step 5: Solve for x
    x = 33,757,746.40/5,129.92
  6. Step 6: Final answer
    x = 6,580.56

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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.