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Finding the Fourth Proportional to 4,305.42, 6,453.78 and 2,918.90

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Solution

The fourth proportional to 4,305.42, 6,453.78 and 2,918.90 is: 4,375.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,305.42 : 6,453.78 = 2,918.90 : x
  2. Step 2: Convert to fraction form
    4,305.42/6,453.78 = 2,918.90/x
  3. Step 3: Cross multiply
    4,305.42x = 6,453.78 × 2,918.90
  4. Step 4: Simplify right side
    4,305.42x = 18,837,938.44
  5. Step 5: Solve for x
    x = 18,837,938.44/4,305.42
  6. Step 6: Final answer
    x = 4,375.40

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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.