Home / 2,979.66-4,111.56-1,653.18

Finding the Fourth Proportional to 2,979.66, 4,111.56 and 1,653.18

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Solution

The fourth proportional to 2,979.66, 4,111.56 and 1,653.18 is: 2,281.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.66 : 4,111.56 = 1,653.18 : x
  2. Step 2: Convert to fraction form
    2,979.66/4,111.56 = 1,653.18/x
  3. Step 3: Cross multiply
    2,979.66x = 4,111.56 × 1,653.18
  4. Step 4: Simplify right side
    2,979.66x = 6,797,148.76
  5. Step 5: Solve for x
    x = 6,797,148.76/2,979.66
  6. Step 6: Final answer
    x = 2,281.18

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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.