Home / 6,973.43-9,621.99-3,990.20

Finding the Fourth Proportional to 6,973.43, 9,621.99 and 3,990.20

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Solution

The fourth proportional to 6,973.43, 9,621.99 and 3,990.20 is: 5,505.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,973.43 : 9,621.99 = 3,990.20 : x
  2. Step 2: Convert to fraction form
    6,973.43/9,621.99 = 3,990.20/x
  3. Step 3: Cross multiply
    6,973.43x = 9,621.99 × 3,990.20
  4. Step 4: Simplify right side
    6,973.43x = 38,393,616.39
  5. Step 5: Solve for x
    x = 38,393,616.39/6,973.43
  6. Step 6: Final answer
    x = 5,505.70

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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.