Home / 3,059.40-4,221.45-1,800.21

Finding the Fourth Proportional to 3,059.40, 4,221.45 and 1,800.21

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Solution

The fourth proportional to 3,059.40, 4,221.45 and 1,800.21 is: 2,483.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,059.40 : 4,221.45 = 1,800.21 : x
  2. Step 2: Convert to fraction form
    3,059.40/4,221.45 = 1,800.21/x
  3. Step 3: Cross multiply
    3,059.40x = 4,221.45 × 1,800.21
  4. Step 4: Simplify right side
    3,059.40x = 7,599,496.50
  5. Step 5: Solve for x
    x = 7,599,496.50/3,059.40
  6. Step 6: Final answer
    x = 2,483.98

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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.