Home / 1,979.02-2,730.94-1,160.70

Finding the Fourth Proportional to 1,979.02, 2,730.94 and 1,160.70

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Solution

The fourth proportional to 1,979.02, 2,730.94 and 1,160.70 is: 1,601.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.02 : 2,730.94 = 1,160.70 : x
  2. Step 2: Convert to fraction form
    1,979.02/2,730.94 = 1,160.70/x
  3. Step 3: Cross multiply
    1,979.02x = 2,730.94 × 1,160.70
  4. Step 4: Simplify right side
    1,979.02x = 3,169,788.92
  5. Step 5: Solve for x
    x = 3,169,788.92/1,979.02
  6. Step 6: Final answer
    x = 1,601.70

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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.