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Finding the Fourth Proportional to 9,334.90, 12,859.32 and 7,841.80

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Solution

The fourth proportional to 9,334.90, 12,859.32 and 7,841.80 is: 10,802.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,334.90 : 12,859.32 = 7,841.80 : x
  2. Step 2: Convert to fraction form
    9,334.90/12,859.32 = 7,841.80/x
  3. Step 3: Cross multiply
    9,334.90x = 12,859.32 × 7,841.80
  4. Step 4: Simplify right side
    9,334.90x = 100,840,215.58
  5. Step 5: Solve for x
    x = 100,840,215.58/9,334.90
  6. Step 6: Final answer
    x = 10,802.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.