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Finding the Fourth Proportional to 6,648.18, 9,969.09 and 3,875.65

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Solution

The fourth proportional to 6,648.18, 9,969.09 and 3,875.65 is: 5,811.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,648.18 : 9,969.09 = 3,875.65 : x
  2. Step 2: Convert to fraction form
    6,648.18/9,969.09 = 3,875.65/x
  3. Step 3: Cross multiply
    6,648.18x = 9,969.09 × 3,875.65
  4. Step 4: Simplify right side
    6,648.18x = 38,636,703.66
  5. Step 5: Solve for x
    x = 38,636,703.66/6,648.18
  6. Step 6: Final answer
    x = 5,811.62

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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.