Home / 1,398.33-1,928.07-1,162.55

Finding the Fourth Proportional to 1,398.33, 1,928.07 and 1,162.55

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Solution

The fourth proportional to 1,398.33, 1,928.07 and 1,162.55 is: 1,602.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398.33 : 1,928.07 = 1,162.55 : x
  2. Step 2: Convert to fraction form
    1,398.33/1,928.07 = 1,162.55/x
  3. Step 3: Cross multiply
    1,398.33x = 1,928.07 × 1,162.55
  4. Step 4: Simplify right side
    1,398.33x = 2,241,482.60
  5. Step 5: Solve for x
    x = 2,241,482.60/1,398.33
  6. Step 6: Final answer
    x = 1,602.97

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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.