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Finding the Fourth Proportional to 8,919.32, 13,368.65 and 4,969.65

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Solution

The fourth proportional to 8,919.32, 13,368.65 and 4,969.65 is: 7,448.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.32 : 13,368.65 = 4,969.65 : x
  2. Step 2: Convert to fraction form
    8,919.32/13,368.65 = 4,969.65/x
  3. Step 3: Cross multiply
    8,919.32x = 13,368.65 × 4,969.65
  4. Step 4: Simplify right side
    8,919.32x = 66,437,536.76
  5. Step 5: Solve for x
    x = 66,437,536.76/8,919.32
  6. Step 6: Final answer
    x = 7,448.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.