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Finding the Fourth Proportional to 6,448.40, 8,898.12 and 3,795.65

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Solution

The fourth proportional to 6,448.40, 8,898.12 and 3,795.65 is: 5,237.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,448.40 : 8,898.12 = 3,795.65 : x
  2. Step 2: Convert to fraction form
    6,448.40/8,898.12 = 3,795.65/x
  3. Step 3: Cross multiply
    6,448.40x = 8,898.12 × 3,795.65
  4. Step 4: Simplify right side
    6,448.40x = 33,774,149.18
  5. Step 5: Solve for x
    x = 33,774,149.18/6,448.40
  6. Step 6: Final answer
    x = 5,237.60

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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.