Home / 7,315.65-10,979.60-6,626.75

Finding the Fourth Proportional to 7,315.65, 10,979.60 and 6,626.75

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Solution

The fourth proportional to 7,315.65, 10,979.60 and 6,626.75 is: 9,945.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,315.65 : 10,979.60 = 6,626.75 : x
  2. Step 2: Convert to fraction form
    7,315.65/10,979.60 = 6,626.75/x
  3. Step 3: Cross multiply
    7,315.65x = 10,979.60 × 6,626.75
  4. Step 4: Simplify right side
    7,315.65x = 72,758,976.27
  5. Step 5: Solve for x
    x = 72,758,976.27/7,315.65
  6. Step 6: Final answer
    x = 9,945.66

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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.