Home / 2,979.88-4,112.16-1,653.58

Finding the Fourth Proportional to 2,979.88, 4,112.16 and 1,653.58

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Solution

The fourth proportional to 2,979.88, 4,112.16 and 1,653.58 is: 2,281.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.88 : 4,112.16 = 1,653.58 : x
  2. Step 2: Convert to fraction form
    2,979.88/4,112.16 = 1,653.58/x
  3. Step 3: Cross multiply
    2,979.88x = 4,112.16 × 1,653.58
  4. Step 4: Simplify right side
    2,979.88x = 6,799,785.53
  5. Step 5: Solve for x
    x = 6,799,785.53/2,979.88
  6. Step 6: Final answer
    x = 2,281.90

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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.