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Finding the Fourth Proportional to 2,798.92, 3,862.29 and 1,620.07

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Solution

The fourth proportional to 2,798.92, 3,862.29 and 1,620.07 is: 2,235.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.92 : 3,862.29 = 1,620.07 : x
  2. Step 2: Convert to fraction form
    2,798.92/3,862.29 = 1,620.07/x
  3. Step 3: Cross multiply
    2,798.92x = 3,862.29 × 1,620.07
  4. Step 4: Simplify right side
    2,798.92x = 6,257,180.16
  5. Step 5: Solve for x
    x = 6,257,180.16/2,798.92
  6. Step 6: Final answer
    x = 2,235.57

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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.