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Finding the Fourth Proportional to 5,861.74, 8,071.26 and 5,391.54

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Solution

The fourth proportional to 5,861.74, 8,071.26 and 5,391.54 is: 7,423.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,861.74 : 8,071.26 = 5,391.54 : x
  2. Step 2: Convert to fraction form
    5,861.74/8,071.26 = 5,391.54/x
  3. Step 3: Cross multiply
    5,861.74x = 8,071.26 × 5,391.54
  4. Step 4: Simplify right side
    5,861.74x = 43,516,521.14
  5. Step 5: Solve for x
    x = 43,516,521.14/5,861.74
  6. Step 6: Final answer
    x = 7,423.82

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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.