Home / 6,690.40-9,231.77-4,001.00

Finding the Fourth Proportional to 6,690.40, 9,231.77 and 4,001.00

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Solution

The fourth proportional to 6,690.40, 9,231.77 and 4,001.00 is: 5,520.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,690.40 : 9,231.77 = 4,001.00 : x
  2. Step 2: Convert to fraction form
    6,690.40/9,231.77 = 4,001.00/x
  3. Step 3: Cross multiply
    6,690.40x = 9,231.77 × 4,001.00
  4. Step 4: Simplify right side
    6,690.40x = 36,936,275.61
  5. Step 5: Solve for x
    x = 36,936,275.61/6,690.40
  6. Step 6: Final answer
    x = 5,520.79

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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.