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Finding the Fourth Proportional to 7,674.78, 10,590.96 and 4,317.78

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Solution

The fourth proportional to 7,674.78, 10,590.96 and 4,317.78 is: 5,958.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,674.78 : 10,590.96 = 4,317.78 : x
  2. Step 2: Convert to fraction form
    7,674.78/10,590.96 = 4,317.78/x
  3. Step 3: Cross multiply
    7,674.78x = 10,590.96 × 4,317.78
  4. Step 4: Simplify right side
    7,674.78x = 45,729,435.27
  5. Step 5: Solve for x
    x = 45,729,435.27/7,674.78
  6. Step 6: Final answer
    x = 5,958.40

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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.