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Finding the Fourth Proportional to 6,626, 9,143.55 and 3,972.89

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Solution

The fourth proportional to 6,626, 9,143.55 and 3,972.89 is: 5,482.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,626 : 9,143.55 = 3,972.89 : x
  2. Step 2: Convert to fraction form
    6,626/9,143.55 = 3,972.89/x
  3. Step 3: Cross multiply
    6,626x = 9,143.55 × 3,972.89
  4. Step 4: Simplify right side
    6,626x = 36,326,318.36
  5. Step 5: Solve for x
    x = 36,326,318.36/6,626
  6. Step 6: Final answer
    x = 5,482.39

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Double scale
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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.