Home / 6,990.20-9,646.65-3,803.69

Finding the Fourth Proportional to 6,990.20, 9,646.65 and 3,803.69

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Solution

The fourth proportional to 6,990.20, 9,646.65 and 3,803.69 is: 5,249.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.20 : 9,646.65 = 3,803.69 : x
  2. Step 2: Convert to fraction form
    6,990.20/9,646.65 = 3,803.69/x
  3. Step 3: Cross multiply
    6,990.20x = 9,646.65 × 3,803.69
  4. Step 4: Simplify right side
    6,990.20x = 36,692,890.26
  5. Step 5: Solve for x
    x = 36,692,890.26/6,990.20
  6. Step 6: Final answer
    x = 5,249.19

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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.