Home / 7,789.72-11,688.90-5,713.96

Finding the Fourth Proportional to 7,789.72, 11,688.90 and 5,713.96

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Solution

The fourth proportional to 7,789.72, 11,688.90 and 5,713.96 is: 8,574.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.72 : 11,688.90 = 5,713.96 : x
  2. Step 2: Convert to fraction form
    7,789.72/11,688.90 = 5,713.96/x
  3. Step 3: Cross multiply
    7,789.72x = 11,688.90 × 5,713.96
  4. Step 4: Simplify right side
    7,789.72x = 66,789,907.04
  5. Step 5: Solve for x
    x = 66,789,907.04/7,789.72
  6. Step 6: Final answer
    x = 8,574.11

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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.