Home / 1,470.20-2,028.16-880.62

Finding the Fourth Proportional to 1,470.20, 2,028.16 and 880.62

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Solution

The fourth proportional to 1,470.20, 2,028.16 and 880.62 is: 1,214.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,470.20 : 2,028.16 = 880.62 : x
  2. Step 2: Convert to fraction form
    1,470.20/2,028.16 = 880.62/x
  3. Step 3: Cross multiply
    1,470.20x = 2,028.16 × 880.62
  4. Step 4: Simplify right side
    1,470.20x = 1,786,038.26
  5. Step 5: Solve for x
    x = 1,786,038.26/1,470.20
  6. Step 6: Final answer
    x = 1,214.83

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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.