Home / 1,202.67-1,660.37-1,071.45

Finding the Fourth Proportional to 1,202.67, 1,660.37 and 1,071.45

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Solution

The fourth proportional to 1,202.67, 1,660.37 and 1,071.45 is: 1,479.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,202.67 : 1,660.37 = 1,071.45 : x
  2. Step 2: Convert to fraction form
    1,202.67/1,660.37 = 1,071.45/x
  3. Step 3: Cross multiply
    1,202.67x = 1,660.37 × 1,071.45
  4. Step 4: Simplify right side
    1,202.67x = 1,778,998.08
  5. Step 5: Solve for x
    x = 1,778,998.08/1,202.67
  6. Step 6: Final answer
    x = 1,479.21

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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.