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Finding the Fourth Proportional to 5,678.16, 8,509.68 and 2,750.64

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Solution

The fourth proportional to 5,678.16, 8,509.68 and 2,750.64 is: 4,122.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.16 : 8,509.68 = 2,750.64 : x
  2. Step 2: Convert to fraction form
    5,678.16/8,509.68 = 2,750.64/x
  3. Step 3: Cross multiply
    5,678.16x = 8,509.68 × 2,750.64
  4. Step 4: Simplify right side
    5,678.16x = 23,407,066.20
  5. Step 5: Solve for x
    x = 23,407,066.20/5,678.16
  6. Step 6: Final answer
    x = 4,122.30

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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.