Home / 7,211.79-10,816.61-5,987.07

Finding the Fourth Proportional to 7,211.79, 10,816.61 and 5,987.07

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Solution

The fourth proportional to 7,211.79, 10,816.61 and 5,987.07 is: 8,979.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,211.79 : 10,816.61 = 5,987.07 : x
  2. Step 2: Convert to fraction form
    7,211.79/10,816.61 = 5,987.07/x
  3. Step 3: Cross multiply
    7,211.79x = 10,816.61 × 5,987.07
  4. Step 4: Simplify right side
    7,211.79x = 64,759,771.30
  5. Step 5: Solve for x
    x = 64,759,771.30/7,211.79
  6. Step 6: Final answer
    x = 8,979.71

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Double scale
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Similar ratio
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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.