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Finding the Fourth Proportional to 6,402.64, 8,835.72 and 3,608.14

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Solution

The fourth proportional to 6,402.64, 8,835.72 and 3,608.14 is: 4,979.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,402.64 : 8,835.72 = 3,608.14 : x
  2. Step 2: Convert to fraction form
    6,402.64/8,835.72 = 3,608.14/x
  3. Step 3: Cross multiply
    6,402.64x = 8,835.72 × 3,608.14
  4. Step 4: Simplify right side
    6,402.64x = 31,880,514.76
  5. Step 5: Solve for x
    x = 31,880,514.76/6,402.64
  6. Step 6: Final answer
    x = 4,979.28

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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.