Home / 3,678.63-5,521.42-1,340.90

Finding the Fourth Proportional to 3,678.63, 5,521.42 and 1,340.90

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Solution

The fourth proportional to 3,678.63, 5,521.42 and 1,340.90 is: 2,012.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.63 : 5,521.42 = 1,340.90 : x
  2. Step 2: Convert to fraction form
    3,678.63/5,521.42 = 1,340.90/x
  3. Step 3: Cross multiply
    3,678.63x = 5,521.42 × 1,340.90
  4. Step 4: Simplify right side
    3,678.63x = 7,403,643.78
  5. Step 5: Solve for x
    x = 7,403,643.78/3,678.63
  6. Step 6: Final answer
    x = 2,012.61

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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.