Home / 1,979.73-2,731.77-1,140.24

Finding the Fourth Proportional to 1,979.73, 2,731.77 and 1,140.24

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Solution

The fourth proportional to 1,979.73, 2,731.77 and 1,140.24 is: 1,573.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.73 : 2,731.77 = 1,140.24 : x
  2. Step 2: Convert to fraction form
    1,979.73/2,731.77 = 1,140.24/x
  3. Step 3: Cross multiply
    1,979.73x = 2,731.77 × 1,140.24
  4. Step 4: Simplify right side
    1,979.73x = 3,114,873.42
  5. Step 5: Solve for x
    x = 3,114,873.42/1,979.73
  6. Step 6: Final answer
    x = 1,573.38

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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.