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Finding the Fourth Proportional to 7,196.30, 9,931.18 and 4,009.72

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Solution

The fourth proportional to 7,196.30, 9,931.18 and 4,009.72 is: 5,533.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,196.30 : 9,931.18 = 4,009.72 : x
  2. Step 2: Convert to fraction form
    7,196.30/9,931.18 = 4,009.72/x
  3. Step 3: Cross multiply
    7,196.30x = 9,931.18 × 4,009.72
  4. Step 4: Simplify right side
    7,196.30x = 39,821,251.07
  5. Step 5: Solve for x
    x = 39,821,251.07/7,196.30
  6. Step 6: Final answer
    x = 5,533.57

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.