Home / 6,990.42-9,647.18-4,006.75

Finding the Fourth Proportional to 6,990.42, 9,647.18 and 4,006.75

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Solution

The fourth proportional to 6,990.42, 9,647.18 and 4,006.75 is: 5,529.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.42 : 9,647.18 = 4,006.75 : x
  2. Step 2: Convert to fraction form
    6,990.42/9,647.18 = 4,006.75/x
  3. Step 3: Cross multiply
    6,990.42x = 9,647.18 × 4,006.75
  4. Step 4: Simplify right side
    6,990.42x = 38,653,845.52
  5. Step 5: Solve for x
    x = 38,653,845.52/6,990.42
  6. Step 6: Final answer
    x = 5,529.55

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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.