Home / 5,188.76-7,160.51-2,830.90

Finding the Fourth Proportional to 5,188.76, 7,160.51 and 2,830.90

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Solution

The fourth proportional to 5,188.76, 7,160.51 and 2,830.90 is: 3,906.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,188.76 : 7,160.51 = 2,830.90 : x
  2. Step 2: Convert to fraction form
    5,188.76/7,160.51 = 2,830.90/x
  3. Step 3: Cross multiply
    5,188.76x = 7,160.51 × 2,830.90
  4. Step 4: Simplify right side
    5,188.76x = 20,270,637.80
  5. Step 5: Solve for x
    x = 20,270,637.80/5,188.76
  6. Step 6: Final answer
    x = 3,906.64

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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.