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Finding the Fourth Proportional to 6,615.61, 9,924.22 and 2,918.77

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Solution

The fourth proportional to 6,615.61, 9,924.22 and 2,918.77 is: 4,378.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.61 : 9,924.22 = 2,918.77 : x
  2. Step 2: Convert to fraction form
    6,615.61/9,924.22 = 2,918.77/x
  3. Step 3: Cross multiply
    6,615.61x = 9,924.22 × 2,918.77
  4. Step 4: Simplify right side
    6,615.61x = 28,966,515.61
  5. Step 5: Solve for x
    x = 28,966,515.61/6,615.61
  6. Step 6: Final answer
    x = 4,378.51

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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.