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Finding the Fourth Proportional to 8,913.60, 13,370.24 and 2,339.84

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Solution

The fourth proportional to 8,913.60, 13,370.24 and 2,339.84 is: 3,509.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.60 : 13,370.24 = 2,339.84 : x
  2. Step 2: Convert to fraction form
    8,913.60/13,370.24 = 2,339.84/x
  3. Step 3: Cross multiply
    8,913.60x = 13,370.24 × 2,339.84
  4. Step 4: Simplify right side
    8,913.60x = 31,284,222.36
  5. Step 5: Solve for x
    x = 31,284,222.36/8,913.60
  6. Step 6: Final answer
    x = 3,509.72

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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.