Home / 2,979.70-4,465.50-2,490.46

Finding the Fourth Proportional to 2,979.70, 4,465.50 and 2,490.46

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Solution

The fourth proportional to 2,979.70, 4,465.50 and 2,490.46 is: 3,732.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.70 : 4,465.50 = 2,490.46 : x
  2. Step 2: Convert to fraction form
    2,979.70/4,465.50 = 2,490.46/x
  3. Step 3: Cross multiply
    2,979.70x = 4,465.50 × 2,490.46
  4. Step 4: Simplify right side
    2,979.70x = 11,121,149.13
  5. Step 5: Solve for x
    x = 11,121,149.13/2,979.70
  6. Step 6: Final answer
    x = 3,732.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.