Home / 1,511.73-2,086.86-1,445.65

Finding the Fourth Proportional to 1,511.73, 2,086.86 and 1,445.65

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Solution

The fourth proportional to 1,511.73, 2,086.86 and 1,445.65 is: 1,995.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.73 : 2,086.86 = 1,445.65 : x
  2. Step 2: Convert to fraction form
    1,511.73/2,086.86 = 1,445.65/x
  3. Step 3: Cross multiply
    1,511.73x = 2,086.86 × 1,445.65
  4. Step 4: Simplify right side
    1,511.73x = 3,016,869.36
  5. Step 5: Solve for x
    x = 3,016,869.36/1,511.73
  6. Step 6: Final answer
    x = 1,995.64

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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.