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Finding the Fourth Proportional to 7,777.01, 10,729.22 and 4,787.65

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Solution

The fourth proportional to 7,777.01, 10,729.22 and 4,787.65 is: 6,605.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777.01 : 10,729.22 = 4,787.65 : x
  2. Step 2: Convert to fraction form
    7,777.01/10,729.22 = 4,787.65/x
  3. Step 3: Cross multiply
    7,777.01x = 10,729.22 × 4,787.65
  4. Step 4: Simplify right side
    7,777.01x = 51,367,739.61
  5. Step 5: Solve for x
    x = 51,367,739.61/7,777.01
  6. Step 6: Final answer
    x = 6,605.07

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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.