Home / 2,228.40-3,337.80-1,985.20

Finding the Fourth Proportional to 2,228.40, 3,337.80 and 1,985.20

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Solution

The fourth proportional to 2,228.40, 3,337.80 and 1,985.20 is: 2,973.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,228.40 : 3,337.80 = 1,985.20 : x
  2. Step 2: Convert to fraction form
    2,228.40/3,337.80 = 1,985.20/x
  3. Step 3: Cross multiply
    2,228.40x = 3,337.80 × 1,985.20
  4. Step 4: Simplify right side
    2,228.40x = 6,626,200.56
  5. Step 5: Solve for x
    x = 6,626,200.56/2,228.40
  6. Step 6: Final answer
    x = 2,973.52

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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.