Home / 2,869.59-4,279.13-2,642.39

Finding the Fourth Proportional to 2,869.59, 4,279.13 and 2,642.39

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Solution

The fourth proportional to 2,869.59, 4,279.13 and 2,642.39 is: 3,940.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.59 : 4,279.13 = 2,642.39 : x
  2. Step 2: Convert to fraction form
    2,869.59/4,279.13 = 2,642.39/x
  3. Step 3: Cross multiply
    2,869.59x = 4,279.13 × 2,642.39
  4. Step 4: Simplify right side
    2,869.59x = 11,307,115.53
  5. Step 5: Solve for x
    x = 11,307,115.53/2,869.59
  6. Step 6: Final answer
    x = 3,940.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.