Home / 4,747.07-7,122.20-2,990.05

Finding the Fourth Proportional to 4,747.07, 7,122.20 and 2,990.05

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Solution

The fourth proportional to 4,747.07, 7,122.20 and 2,990.05 is: 4,486.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,747.07 : 7,122.20 = 2,990.05 : x
  2. Step 2: Convert to fraction form
    4,747.07/7,122.20 = 2,990.05/x
  3. Step 3: Cross multiply
    4,747.07x = 7,122.20 × 2,990.05
  4. Step 4: Simplify right side
    4,747.07x = 21,295,701.35
  5. Step 5: Solve for x
    x = 21,295,701.35/4,747.07
  6. Step 6: Final answer
    x = 4,486.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.