Home / 2,903.80-4,355.70-2,612.20

Finding the Fourth Proportional to 2,903.80, 4,355.70 and 2,612.20

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Solution

The fourth proportional to 2,903.80, 4,355.70 and 2,612.20 is: 3,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,903.80 : 4,355.70 = 2,612.20 : x
  2. Step 2: Convert to fraction form
    2,903.80/4,355.70 = 2,612.20/x
  3. Step 3: Cross multiply
    2,903.80x = 4,355.70 × 2,612.20
  4. Step 4: Simplify right side
    2,903.80x = 11,377,959.54
  5. Step 5: Solve for x
    x = 11,377,959.54/2,903.80
  6. Step 6: Final answer
    x = 3,918.30

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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.