Home / 2,891.19-4,339.77-1,781.40

Finding the Fourth Proportional to 2,891.19, 4,339.77 and 1,781.40

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Solution

The fourth proportional to 2,891.19, 4,339.77 and 1,781.40 is: 2,673.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.19 : 4,339.77 = 1,781.40 : x
  2. Step 2: Convert to fraction form
    2,891.19/4,339.77 = 1,781.40/x
  3. Step 3: Cross multiply
    2,891.19x = 4,339.77 × 1,781.40
  4. Step 4: Simplify right side
    2,891.19x = 7,730,866.28
  5. Step 5: Solve for x
    x = 7,730,866.28/2,891.19
  6. Step 6: Final answer
    x = 2,673.94

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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.