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Finding the Fourth Proportional to 6,448.32, 8,899.20 and 4,351.68

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Solution

The fourth proportional to 6,448.32, 8,899.20 and 4,351.68 is: 6,005.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,448.32 : 8,899.20 = 4,351.68 : x
  2. Step 2: Convert to fraction form
    6,448.32/8,899.20 = 4,351.68/x
  3. Step 3: Cross multiply
    6,448.32x = 8,899.20 × 4,351.68
  4. Step 4: Simplify right side
    6,448.32x = 38,726,470.66
  5. Step 5: Solve for x
    x = 38,726,470.66/6,448.32
  6. Step 6: Final answer
    x = 6,005.67

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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.