Home / 2,979.49-4,111.74-1,635.13

Finding the Fourth Proportional to 2,979.49, 4,111.74 and 1,635.13

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Solution

The fourth proportional to 2,979.49, 4,111.74 and 1,635.13 is: 2,256.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.49 : 4,111.74 = 1,635.13 : x
  2. Step 2: Convert to fraction form
    2,979.49/4,111.74 = 1,635.13/x
  3. Step 3: Cross multiply
    2,979.49x = 4,111.74 × 1,635.13
  4. Step 4: Simplify right side
    2,979.49x = 6,723,229.43
  5. Step 5: Solve for x
    x = 6,723,229.43/2,979.49
  6. Step 6: Final answer
    x = 2,256.50

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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.