Home / 7,789.80-11,687.43-4,864.68

Finding the Fourth Proportional to 7,789.80, 11,687.43 and 4,864.68

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Solution

The fourth proportional to 7,789.80, 11,687.43 and 4,864.68 is: 7,298.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.80 : 11,687.43 = 4,864.68 : x
  2. Step 2: Convert to fraction form
    7,789.80/11,687.43 = 4,864.68/x
  3. Step 3: Cross multiply
    7,789.80x = 11,687.43 × 4,864.68
  4. Step 4: Simplify right side
    7,789.80x = 56,855,606.97
  5. Step 5: Solve for x
    x = 56,855,606.97/7,789.80
  6. Step 6: Final answer
    x = 7,298.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.