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Finding the Fourth Proportional to 5,656.38, 8,442.84 and 4,991.64

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Solution

The fourth proportional to 5,656.38, 8,442.84 and 4,991.64 is: 7,450.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,656.38 : 8,442.84 = 4,991.64 : x
  2. Step 2: Convert to fraction form
    5,656.38/8,442.84 = 4,991.64/x
  3. Step 3: Cross multiply
    5,656.38x = 8,442.84 × 4,991.64
  4. Step 4: Simplify right side
    5,656.38x = 42,143,617.86
  5. Step 5: Solve for x
    x = 42,143,617.86/5,656.38
  6. Step 6: Final answer
    x = 7,450.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.