Home / 1,470.05-2,028.60-806.89

Finding the Fourth Proportional to 1,470.05, 2,028.60 and 806.89

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Solution

The fourth proportional to 1,470.05, 2,028.60 and 806.89 is: 1,113.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,470.05 : 2,028.60 = 806.89 : x
  2. Step 2: Convert to fraction form
    1,470.05/2,028.60 = 806.89/x
  3. Step 3: Cross multiply
    1,470.05x = 2,028.60 × 806.89
  4. Step 4: Simplify right side
    1,470.05x = 1,636,857.05
  5. Step 5: Solve for x
    x = 1,636,857.05/1,470.05
  6. Step 6: Final answer
    x = 1,113.47

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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.