Home / 1,869.83-2,805.08-620.06

Finding the Fourth Proportional to 1,869.83, 2,805.08 and 620.06

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Solution

The fourth proportional to 1,869.83, 2,805.08 and 620.06 is: 930.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.83 : 2,805.08 = 620.06 : x
  2. Step 2: Convert to fraction form
    1,869.83/2,805.08 = 620.06/x
  3. Step 3: Cross multiply
    1,869.83x = 2,805.08 × 620.06
  4. Step 4: Simplify right side
    1,869.83x = 1,739,304.27
  5. Step 5: Solve for x
    x = 1,739,304.27/1,869.83
  6. Step 6: Final answer
    x = 930.19

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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.