Home / 7,105.33-9,809.57-6,317.20

Finding the Fourth Proportional to 7,105.33, 9,809.57 and 6,317.20

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Solution

The fourth proportional to 7,105.33, 9,809.57 and 6,317.20 is: 8,721.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,105.33 : 9,809.57 = 6,317.20 : x
  2. Step 2: Convert to fraction form
    7,105.33/9,809.57 = 6,317.20/x
  3. Step 3: Cross multiply
    7,105.33x = 9,809.57 × 6,317.20
  4. Step 4: Simplify right side
    7,105.33x = 61,969,015.60
  5. Step 5: Solve for x
    x = 61,969,015.60/7,105.33
  6. Step 6: Final answer
    x = 8,721.48

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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.