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Finding the Fourth Proportional to 5,188.56, 7,775.28 and 2,587.92

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Solution

The fourth proportional to 5,188.56, 7,775.28 and 2,587.92 is: 3,878.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,188.56 : 7,775.28 = 2,587.92 : x
  2. Step 2: Convert to fraction form
    5,188.56/7,775.28 = 2,587.92/x
  3. Step 3: Cross multiply
    5,188.56x = 7,775.28 × 2,587.92
  4. Step 4: Simplify right side
    5,188.56x = 20,121,802.62
  5. Step 5: Solve for x
    x = 20,121,802.62/5,188.56
  6. Step 6: Final answer
    x = 3,878.11

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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.