Home / 6,784.48-9,364.08-3,990.88

Finding the Fourth Proportional to 6,784.48, 9,364.08 and 3,990.88

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Solution

The fourth proportional to 6,784.48, 9,364.08 and 3,990.88 is: 5,508.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,784.48 : 9,364.08 = 3,990.88 : x
  2. Step 2: Convert to fraction form
    6,784.48/9,364.08 = 3,990.88/x
  3. Step 3: Cross multiply
    6,784.48x = 9,364.08 × 3,990.88
  4. Step 4: Simplify right side
    6,784.48x = 37,370,919.59
  5. Step 5: Solve for x
    x = 37,370,919.59/6,784.48
  6. Step 6: Final answer
    x = 5,508.30

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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.