Home / 6,921.99-9,552.35-3,778.18

Finding the Fourth Proportional to 6,921.99, 9,552.35 and 3,778.18

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Solution

The fourth proportional to 6,921.99, 9,552.35 and 3,778.18 is: 5,213.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.99 : 9,552.35 = 3,778.18 : x
  2. Step 2: Convert to fraction form
    6,921.99/9,552.35 = 3,778.18/x
  3. Step 3: Cross multiply
    6,921.99x = 9,552.35 × 3,778.18
  4. Step 4: Simplify right side
    6,921.99x = 36,090,483.29
  5. Step 5: Solve for x
    x = 36,090,483.29/6,921.99
  6. Step 6: Final answer
    x = 5,213.89

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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.