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Finding the Fourth Proportional to 6,400.40, 9,600.60 and 5,104.40

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Solution

The fourth proportional to 6,400.40, 9,600.60 and 5,104.40 is: 7,656.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,400.40 : 9,600.60 = 5,104.40 : x
  2. Step 2: Convert to fraction form
    6,400.40/9,600.60 = 5,104.40/x
  3. Step 3: Cross multiply
    6,400.40x = 9,600.60 × 5,104.40
  4. Step 4: Simplify right side
    6,400.40x = 49,005,302.64
  5. Step 5: Solve for x
    x = 49,005,302.64/6,400.40
  6. Step 6: Final answer
    x = 7,656.60

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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.