Home / 2,979.60-4,112.22-1,801.32

Finding the Fourth Proportional to 2,979.60, 4,112.22 and 1,801.32

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Solution

The fourth proportional to 2,979.60, 4,112.22 and 1,801.32 is: 2,486.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.60 : 4,112.22 = 1,801.32 : x
  2. Step 2: Convert to fraction form
    2,979.60/4,112.22 = 1,801.32/x
  3. Step 3: Cross multiply
    2,979.60x = 4,112.22 × 1,801.32
  4. Step 4: Simplify right side
    2,979.60x = 7,407,424.13
  5. Step 5: Solve for x
    x = 7,407,424.13/2,979.60
  6. Step 6: Final answer
    x = 2,486.05

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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.