Home / 2,223.40-3,330.30-1,980.20

Finding the Fourth Proportional to 2,223.40, 3,330.30 and 1,980.20

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Solution

The fourth proportional to 2,223.40, 3,330.30 and 1,980.20 is: 2,966.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.40 : 3,330.30 = 1,980.20 : x
  2. Step 2: Convert to fraction form
    2,223.40/3,330.30 = 1,980.20/x
  3. Step 3: Cross multiply
    2,223.40x = 3,330.30 × 1,980.20
  4. Step 4: Simplify right side
    2,223.40x = 6,594,660.06
  5. Step 5: Solve for x
    x = 6,594,660.06/2,223.40
  6. Step 6: Final answer
    x = 2,966.03

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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.