Home / 5,157.45-7,117.73-3,168.71

Finding the Fourth Proportional to 5,157.45, 7,117.73 and 3,168.71

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Solution

The fourth proportional to 5,157.45, 7,117.73 and 3,168.71 is: 4,373.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.45 : 7,117.73 = 3,168.71 : x
  2. Step 2: Convert to fraction form
    5,157.45/7,117.73 = 3,168.71/x
  3. Step 3: Cross multiply
    5,157.45x = 7,117.73 × 3,168.71
  4. Step 4: Simplify right side
    5,157.45x = 22,553,970.80
  5. Step 5: Solve for x
    x = 22,553,970.80/5,157.45
  6. Step 6: Final answer
    x = 4,373.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.