Home / 2,820.03-3,891.69-1,641.08

Finding the Fourth Proportional to 2,820.03, 3,891.69 and 1,641.08

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Solution

The fourth proportional to 2,820.03, 3,891.69 and 1,641.08 is: 2,264.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.03 : 3,891.69 = 1,641.08 : x
  2. Step 2: Convert to fraction form
    2,820.03/3,891.69 = 1,641.08/x
  3. Step 3: Cross multiply
    2,820.03x = 3,891.69 × 1,641.08
  4. Step 4: Simplify right side
    2,820.03x = 6,386,555.17
  5. Step 5: Solve for x
    x = 6,386,555.17/2,820.03
  6. Step 6: Final answer
    x = 2,264.71

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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.