Home / 1,380.06-2,070.86-1,072.53

Finding the Fourth Proportional to 1,380.06, 2,070.86 and 1,072.53

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Solution

The fourth proportional to 1,380.06, 2,070.86 and 1,072.53 is: 1,609.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380.06 : 2,070.86 = 1,072.53 : x
  2. Step 2: Convert to fraction form
    1,380.06/2,070.86 = 1,072.53/x
  3. Step 3: Cross multiply
    1,380.06x = 2,070.86 × 1,072.53
  4. Step 4: Simplify right side
    1,380.06x = 2,221,059.48
  5. Step 5: Solve for x
    x = 2,221,059.48/1,380.06
  6. Step 6: Final answer
    x = 1,609.39

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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.