Home / 1,177.68-1,621.38-1,116.12

Finding the Fourth Proportional to 1,177.68, 1,621.38 and 1,116.12

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Solution

The fourth proportional to 1,177.68, 1,621.38 and 1,116.12 is: 1,536.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.68 : 1,621.38 = 1,116.12 : x
  2. Step 2: Convert to fraction form
    1,177.68/1,621.38 = 1,116.12/x
  3. Step 3: Cross multiply
    1,177.68x = 1,621.38 × 1,116.12
  4. Step 4: Simplify right side
    1,177.68x = 1,809,654.65
  5. Step 5: Solve for x
    x = 1,809,654.65/1,177.68
  6. Step 6: Final answer
    x = 1,536.63

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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.