Home / 6,823.13-9,417.72-3,990.35

Finding the Fourth Proportional to 6,823.13, 9,417.72 and 3,990.35

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Solution

The fourth proportional to 6,823.13, 9,417.72 and 3,990.35 is: 5,507.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,823.13 : 9,417.72 = 3,990.35 : x
  2. Step 2: Convert to fraction form
    6,823.13/9,417.72 = 3,990.35/x
  3. Step 3: Cross multiply
    6,823.13x = 9,417.72 × 3,990.35
  4. Step 4: Simplify right side
    6,823.13x = 37,579,951.91
  5. Step 5: Solve for x
    x = 37,579,951.91/6,823.13
  6. Step 6: Final answer
    x = 5,507.73

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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.