Home / 5,207.72-7,186.62-2,817.69

Finding the Fourth Proportional to 5,207.72, 7,186.62 and 2,817.69

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Solution

The fourth proportional to 5,207.72, 7,186.62 and 2,817.69 is: 3,888.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,207.72 : 7,186.62 = 2,817.69 : x
  2. Step 2: Convert to fraction form
    5,207.72/7,186.62 = 2,817.69/x
  3. Step 3: Cross multiply
    5,207.72x = 7,186.62 × 2,817.69
  4. Step 4: Simplify right side
    5,207.72x = 20,249,667.31
  5. Step 5: Solve for x
    x = 20,249,667.31/5,207.72
  6. Step 6: Final answer
    x = 3,888.40

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Half scale
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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.