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Finding the Fourth Proportional to 6,422.64, 8,860.62 and 5,091

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Solution

The fourth proportional to 6,422.64, 8,860.62 and 5,091 is: 7,023.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,422.64 : 8,860.62 = 5,091 : x
  2. Step 2: Convert to fraction form
    6,422.64/8,860.62 = 5,091/x
  3. Step 3: Cross multiply
    6,422.64x = 8,860.62 × 5,091
  4. Step 4: Simplify right side
    6,422.64x = 45,109,416.42
  5. Step 5: Solve for x
    x = 45,109,416.42/6,422.64
  6. Step 6: Final answer
    x = 7,023.50

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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.