Home / 6,440.40-9,660.60-5,144.40

Finding the Fourth Proportional to 6,440.40, 9,660.60 and 5,144.40

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Solution

The fourth proportional to 6,440.40, 9,660.60 and 5,144.40 is: 7,716.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,440.40 : 9,660.60 = 5,144.40 : x
  2. Step 2: Convert to fraction form
    6,440.40/9,660.60 = 5,144.40/x
  3. Step 3: Cross multiply
    6,440.40x = 9,660.60 × 5,144.40
  4. Step 4: Simplify right side
    6,440.40x = 49,697,990.64
  5. Step 5: Solve for x
    x = 49,697,990.64/6,440.40
  6. Step 6: Final answer
    x = 7,716.60

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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.