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Finding the Fourth Proportional to 7,158.06, 9,876.56 and 6,922.08

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Solution

The fourth proportional to 7,158.06, 9,876.56 and 6,922.08 is: 9,550.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158.06 : 9,876.56 = 6,922.08 : x
  2. Step 2: Convert to fraction form
    7,158.06/9,876.56 = 6,922.08/x
  3. Step 3: Cross multiply
    7,158.06x = 9,876.56 × 6,922.08
  4. Step 4: Simplify right side
    7,158.06x = 68,366,303.83
  5. Step 5: Solve for x
    x = 68,366,303.83/7,158.06
  6. Step 6: Final answer
    x = 9,550.95

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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.