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Finding the Fourth Proportional to 7,789.95, 10,722.06 and 6,517.02

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Solution

The fourth proportional to 7,789.95, 10,722.06 and 6,517.02 is: 8,970.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.95 : 10,722.06 = 6,517.02 : x
  2. Step 2: Convert to fraction form
    7,789.95/10,722.06 = 6,517.02/x
  3. Step 3: Cross multiply
    7,789.95x = 10,722.06 × 6,517.02
  4. Step 4: Simplify right side
    7,789.95x = 69,875,879.46
  5. Step 5: Solve for x
    x = 69,875,879.46/7,789.95
  6. Step 6: Final answer
    x = 8,970.00

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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.