Home / 2,979.18-4,111.38-2,010.35

Finding the Fourth Proportional to 2,979.18, 4,111.38 and 2,010.35

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Solution

The fourth proportional to 2,979.18, 4,111.38 and 2,010.35 is: 2,774.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.18 : 4,111.38 = 2,010.35 : x
  2. Step 2: Convert to fraction form
    2,979.18/4,111.38 = 2,010.35/x
  3. Step 3: Cross multiply
    2,979.18x = 4,111.38 × 2,010.35
  4. Step 4: Simplify right side
    2,979.18x = 8,265,323.06
  5. Step 5: Solve for x
    x = 8,265,323.06/2,979.18
  6. Step 6: Final answer
    x = 2,774.36

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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.