Home / 1,620.11-2,236.48-1,246.95

Finding the Fourth Proportional to 1,620.11, 2,236.48 and 1,246.95

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Solution

The fourth proportional to 1,620.11, 2,236.48 and 1,246.95 is: 1,721.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.11 : 2,236.48 = 1,246.95 : x
  2. Step 2: Convert to fraction form
    1,620.11/2,236.48 = 1,246.95/x
  3. Step 3: Cross multiply
    1,620.11x = 2,236.48 × 1,246.95
  4. Step 4: Simplify right side
    1,620.11x = 2,788,775.62
  5. Step 5: Solve for x
    x = 2,788,775.62/1,620.11
  6. Step 6: Final answer
    x = 1,721.35

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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.