Home / 1,383.04-2,070.96-805.60

Finding the Fourth Proportional to 1,383.04, 2,070.96 and 805.60

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Solution

The fourth proportional to 1,383.04, 2,070.96 and 805.60 is: 1,206.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383.04 : 2,070.96 = 805.60 : x
  2. Step 2: Convert to fraction form
    1,383.04/2,070.96 = 805.60/x
  3. Step 3: Cross multiply
    1,383.04x = 2,070.96 × 805.60
  4. Step 4: Simplify right side
    1,383.04x = 1,668,365.38
  5. Step 5: Solve for x
    x = 1,668,365.38/1,383.04
  6. Step 6: Final answer
    x = 1,206.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.