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Finding the Fourth Proportional to 1,859.91, 2,790.11 and 627.07

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Solution

The fourth proportional to 1,859.91, 2,790.11 and 627.07 is: 940.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,859.91 : 2,790.11 = 627.07 : x
  2. Step 2: Convert to fraction form
    1,859.91/2,790.11 = 627.07/x
  3. Step 3: Cross multiply
    1,859.91x = 2,790.11 × 627.07
  4. Step 4: Simplify right side
    1,859.91x = 1,749,594.28
  5. Step 5: Solve for x
    x = 1,749,594.28/1,859.91
  6. Step 6: Final answer
    x = 940.69

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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.