Home / 2,979.42-4,111.59-1,653.12

Finding the Fourth Proportional to 2,979.42, 4,111.59 and 1,653.12

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Solution

The fourth proportional to 2,979.42, 4,111.59 and 1,653.12 is: 2,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.42 : 4,111.59 = 1,653.12 : x
  2. Step 2: Convert to fraction form
    2,979.42/4,111.59 = 1,653.12/x
  3. Step 3: Cross multiply
    2,979.42x = 4,111.59 × 1,653.12
  4. Step 4: Simplify right side
    2,979.42x = 6,796,951.66
  5. Step 5: Solve for x
    x = 6,796,951.66/2,979.42
  6. Step 6: Final answer
    x = 2,281.30

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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.