Home / 1,233.08-1,699.68-839.44

Finding the Fourth Proportional to 1,233.08, 1,699.68 and 839.44

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Solution

The fourth proportional to 1,233.08, 1,699.68 and 839.44 is: 1,157.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,233.08 : 1,699.68 = 839.44 : x
  2. Step 2: Convert to fraction form
    1,233.08/1,699.68 = 839.44/x
  3. Step 3: Cross multiply
    1,233.08x = 1,699.68 × 839.44
  4. Step 4: Simplify right side
    1,233.08x = 1,426,779.38
  5. Step 5: Solve for x
    x = 1,426,779.38/1,233.08
  6. Step 6: Final answer
    x = 1,157.09

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1.5x scale

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.