Home / 8,887.28-13,332.72-2,647.40

Finding the Fourth Proportional to 8,887.28, 13,332.72 and 2,647.40

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Solution

The fourth proportional to 8,887.28, 13,332.72 and 2,647.40 is: 3,971.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,887.28 : 13,332.72 = 2,647.40 : x
  2. Step 2: Convert to fraction form
    8,887.28/13,332.72 = 2,647.40/x
  3. Step 3: Cross multiply
    8,887.28x = 13,332.72 × 2,647.40
  4. Step 4: Simplify right side
    8,887.28x = 35,297,042.93
  5. Step 5: Solve for x
    x = 35,297,042.93/8,887.28
  6. Step 6: Final answer
    x = 3,971.64

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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.