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Finding the Fourth Proportional to 9,368.82, 12,928.94 and 5,177.06

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Solution

The fourth proportional to 9,368.82, 12,928.94 and 5,177.06 is: 7,144.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,368.82 : 12,928.94 = 5,177.06 : x
  2. Step 2: Convert to fraction form
    9,368.82/12,928.94 = 5,177.06/x
  3. Step 3: Cross multiply
    9,368.82x = 12,928.94 × 5,177.06
  4. Step 4: Simplify right side
    9,368.82x = 66,933,898.12
  5. Step 5: Solve for x
    x = 66,933,898.12/9,368.82
  6. Step 6: Final answer
    x = 7,144.33

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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.