Home / 2,078.28-2,869.38-1,605.34

Finding the Fourth Proportional to 2,078.28, 2,869.38 and 1,605.34

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Solution

The fourth proportional to 2,078.28, 2,869.38 and 1,605.34 is: 2,216.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.28 : 2,869.38 = 1,605.34 : x
  2. Step 2: Convert to fraction form
    2,078.28/2,869.38 = 1,605.34/x
  3. Step 3: Cross multiply
    2,078.28x = 2,869.38 × 1,605.34
  4. Step 4: Simplify right side
    2,078.28x = 4,606,330.49
  5. Step 5: Solve for x
    x = 4,606,330.49/2,078.28
  6. Step 6: Final answer
    x = 2,216.41

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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.