Home / 3,420.30-5,126.80-1,445.52

Finding the Fourth Proportional to 3,420.30, 5,126.80 and 1,445.52

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Solution

The fourth proportional to 3,420.30, 5,126.80 and 1,445.52 is: 2,166.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.30 : 5,126.80 = 1,445.52 : x
  2. Step 2: Convert to fraction form
    3,420.30/5,126.80 = 1,445.52/x
  3. Step 3: Cross multiply
    3,420.30x = 5,126.80 × 1,445.52
  4. Step 4: Simplify right side
    3,420.30x = 7,410,891.94
  5. Step 5: Solve for x
    x = 7,410,891.94/3,420.30
  6. Step 6: Final answer
    x = 2,166.74

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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.