Home / 3,870.19-5,805.69-1,273.13

Finding the Fourth Proportional to 3,870.19, 5,805.69 and 1,273.13

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Solution

The fourth proportional to 3,870.19, 5,805.69 and 1,273.13 is: 1,909.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.19 : 5,805.69 = 1,273.13 : x
  2. Step 2: Convert to fraction form
    3,870.19/5,805.69 = 1,273.13/x
  3. Step 3: Cross multiply
    3,870.19x = 5,805.69 × 1,273.13
  4. Step 4: Simplify right side
    3,870.19x = 7,391,398.11
  5. Step 5: Solve for x
    x = 7,391,398.11/3,870.19
  6. Step 6: Final answer
    x = 1,909.83

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1.5x scale

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.