Home / 1,441.04-1,988.68-819.92

Finding the Fourth Proportional to 1,441.04, 1,988.68 and 819.92

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Solution

The fourth proportional to 1,441.04, 1,988.68 and 819.92 is: 1,131.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.04 : 1,988.68 = 819.92 : x
  2. Step 2: Convert to fraction form
    1,441.04/1,988.68 = 819.92/x
  3. Step 3: Cross multiply
    1,441.04x = 1,988.68 × 819.92
  4. Step 4: Simplify right side
    1,441.04x = 1,630,558.51
  5. Step 5: Solve for x
    x = 1,630,558.51/1,441.04
  6. Step 6: Final answer
    x = 1,131.52

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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.