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Finding the Fourth Proportional to 8,959.06, 12,355.03 and 6,830.85

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Solution

The fourth proportional to 8,959.06, 12,355.03 and 6,830.85 is: 9,420.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,959.06 : 12,355.03 = 6,830.85 : x
  2. Step 2: Convert to fraction form
    8,959.06/12,355.03 = 6,830.85/x
  3. Step 3: Cross multiply
    8,959.06x = 12,355.03 × 6,830.85
  4. Step 4: Simplify right side
    8,959.06x = 84,395,356.68
  5. Step 5: Solve for x
    x = 84,395,356.68/8,959.06
  6. Step 6: Final answer
    x = 9,420.11

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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.