Home / 2,790.18-3,847.57-2,393.21

Finding the Fourth Proportional to 2,790.18, 3,847.57 and 2,393.21

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Solution

The fourth proportional to 2,790.18, 3,847.57 and 2,393.21 is: 3,300.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.18 : 3,847.57 = 2,393.21 : x
  2. Step 2: Convert to fraction form
    2,790.18/3,847.57 = 2,393.21/x
  3. Step 3: Cross multiply
    2,790.18x = 3,847.57 × 2,393.21
  4. Step 4: Simplify right side
    2,790.18x = 9,208,046.64
  5. Step 5: Solve for x
    x = 9,208,046.64/2,790.18
  6. Step 6: Final answer
    x = 3,300.16

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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.