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Finding the Fourth Proportional to 5,187.54, 7,158.78 and 2,829.66

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Solution

The fourth proportional to 5,187.54, 7,158.78 and 2,829.66 is: 3,904.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.54 : 7,158.78 = 2,829.66 : x
  2. Step 2: Convert to fraction form
    5,187.54/7,158.78 = 2,829.66/x
  3. Step 3: Cross multiply
    5,187.54x = 7,158.78 × 2,829.66
  4. Step 4: Simplify right side
    5,187.54x = 20,256,913.41
  5. Step 5: Solve for x
    x = 20,256,913.41/5,187.54
  6. Step 6: Final answer
    x = 3,904.92

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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.