Home / 2,979.71-4,112.03-1,653.53

Finding the Fourth Proportional to 2,979.71, 4,112.03 and 1,653.53

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Solution

The fourth proportional to 2,979.71, 4,112.03 and 1,653.53 is: 2,281.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.71 : 4,112.03 = 1,653.53 : x
  2. Step 2: Convert to fraction form
    2,979.71/4,112.03 = 1,653.53/x
  3. Step 3: Cross multiply
    2,979.71x = 4,112.03 × 1,653.53
  4. Step 4: Simplify right side
    2,979.71x = 6,799,366.98
  5. Step 5: Solve for x
    x = 6,799,366.98/2,979.71
  6. Step 6: Final answer
    x = 2,281.89

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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.