Home / 1,309.77-1,795.47-1,286.18

Finding the Fourth Proportional to 1,309.77, 1,795.47 and 1,286.18

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Solution

The fourth proportional to 1,309.77, 1,795.47 and 1,286.18 is: 1,763.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309.77 : 1,795.47 = 1,286.18 : x
  2. Step 2: Convert to fraction form
    1,309.77/1,795.47 = 1,286.18/x
  3. Step 3: Cross multiply
    1,309.77x = 1,795.47 × 1,286.18
  4. Step 4: Simplify right side
    1,309.77x = 2,309,290.54
  5. Step 5: Solve for x
    x = 2,309,290.54/1,309.77
  6. Step 6: Final answer
    x = 1,763.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.