Home / 2,990.25-4,477.56-2,520.48

Finding the Fourth Proportional to 2,990.25, 4,477.56 and 2,520.48

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Solution

The fourth proportional to 2,990.25, 4,477.56 and 2,520.48 is: 3,774.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.25 : 4,477.56 = 2,520.48 : x
  2. Step 2: Convert to fraction form
    2,990.25/4,477.56 = 2,520.48/x
  3. Step 3: Cross multiply
    2,990.25x = 4,477.56 × 2,520.48
  4. Step 4: Simplify right side
    2,990.25x = 11,285,600.43
  5. Step 5: Solve for x
    x = 11,285,600.43/2,990.25
  6. Step 6: Final answer
    x = 3,774.13

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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.