Home / 2,979.93-4,112.13-1,653.60

Finding the Fourth Proportional to 2,979.93, 4,112.13 and 1,653.60

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Solution

The fourth proportional to 2,979.93, 4,112.13 and 1,653.60 is: 2,281.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.93 : 4,112.13 = 1,653.60 : x
  2. Step 2: Convert to fraction form
    2,979.93/4,112.13 = 1,653.60/x
  3. Step 3: Cross multiply
    2,979.93x = 4,112.13 × 1,653.60
  4. Step 4: Simplify right side
    2,979.93x = 6,799,818.17
  5. Step 5: Solve for x
    x = 6,799,818.17/2,979.93
  6. Step 6: Final answer
    x = 2,281.87

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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.