Home / 5,225.72-7,211.88-2,987.69

Finding the Fourth Proportional to 5,225.72, 7,211.88 and 2,987.69

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Solution

The fourth proportional to 5,225.72, 7,211.88 and 2,987.69 is: 4,123.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,225.72 : 7,211.88 = 2,987.69 : x
  2. Step 2: Convert to fraction form
    5,225.72/7,211.88 = 2,987.69/x
  3. Step 3: Cross multiply
    5,225.72x = 7,211.88 × 2,987.69
  4. Step 4: Simplify right side
    5,225.72x = 21,546,861.76
  5. Step 5: Solve for x
    x = 21,546,861.76/5,225.72
  6. Step 6: Final answer
    x = 4,123.23

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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.