Home / 8,736.20-13,085.10-5,267.40

Finding the Fourth Proportional to 8,736.20, 13,085.10 and 5,267.40

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Solution

The fourth proportional to 8,736.20, 13,085.10 and 5,267.40 is: 7,889.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,736.20 : 13,085.10 = 5,267.40 : x
  2. Step 2: Convert to fraction form
    8,736.20/13,085.10 = 5,267.40/x
  3. Step 3: Cross multiply
    8,736.20x = 13,085.10 × 5,267.40
  4. Step 4: Simplify right side
    8,736.20x = 68,924,455.74
  5. Step 5: Solve for x
    x = 68,924,455.74/8,736.20
  6. Step 6: Final answer
    x = 7,889.52

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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.