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Finding the Fourth Proportional to 8,811.61, 13,219.28 and 2,888.06

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Solution

The fourth proportional to 8,811.61, 13,219.28 and 2,888.06 is: 4,332.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.61 : 13,219.28 = 2,888.06 : x
  2. Step 2: Convert to fraction form
    8,811.61/13,219.28 = 2,888.06/x
  3. Step 3: Cross multiply
    8,811.61x = 13,219.28 × 2,888.06
  4. Step 4: Simplify right side
    8,811.61x = 38,178,114.07
  5. Step 5: Solve for x
    x = 38,178,114.07/8,811.61
  6. Step 6: Final answer
    x = 4,332.71

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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.