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Finding the Fourth Proportional to 9,323.56, 12,866.34 and 5,131.72

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Solution

The fourth proportional to 9,323.56, 12,866.34 and 5,131.72 is: 7,081.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,323.56 : 12,866.34 = 5,131.72 : x
  2. Step 2: Convert to fraction form
    9,323.56/12,866.34 = 5,131.72/x
  3. Step 3: Cross multiply
    9,323.56x = 12,866.34 × 5,131.72
  4. Step 4: Simplify right side
    9,323.56x = 66,026,454.30
  5. Step 5: Solve for x
    x = 66,026,454.30/9,323.56
  6. Step 6: Final answer
    x = 7,081.68

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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.