Home / 7,621.38-11,391.51-6,626.16

Finding the Fourth Proportional to 7,621.38, 11,391.51 and 6,626.16

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Solution

The fourth proportional to 7,621.38, 11,391.51 and 6,626.16 is: 9,903.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.38 : 11,391.51 = 6,626.16 : x
  2. Step 2: Convert to fraction form
    7,621.38/11,391.51 = 6,626.16/x
  3. Step 3: Cross multiply
    7,621.38x = 11,391.51 × 6,626.16
  4. Step 4: Simplify right side
    7,621.38x = 75,481,967.90
  5. Step 5: Solve for x
    x = 75,481,967.90/7,621.38
  6. Step 6: Final answer
    x = 9,903.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.