Home / 2,979.55-4,111.77-1,635.17

Finding the Fourth Proportional to 2,979.55, 4,111.77 and 1,635.17

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Solution

The fourth proportional to 2,979.55, 4,111.77 and 1,635.17 is: 2,256.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.55 : 4,111.77 = 1,635.17 : x
  2. Step 2: Convert to fraction form
    2,979.55/4,111.77 = 1,635.17/x
  3. Step 3: Cross multiply
    2,979.55x = 4,111.77 × 1,635.17
  4. Step 4: Simplify right side
    2,979.55x = 6,723,428.52
  5. Step 5: Solve for x
    x = 6,723,428.52/2,979.55
  6. Step 6: Final answer
    x = 2,256.53

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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.