Home / 2,851.04-3,934.40-1,672.80

Finding the Fourth Proportional to 2,851.04, 3,934.40 and 1,672.80

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Solution

The fourth proportional to 2,851.04, 3,934.40 and 1,672.80 is: 2,308.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.04 : 3,934.40 = 1,672.80 : x
  2. Step 2: Convert to fraction form
    2,851.04/3,934.40 = 1,672.80/x
  3. Step 3: Cross multiply
    2,851.04x = 3,934.40 × 1,672.80
  4. Step 4: Simplify right side
    2,851.04x = 6,581,464.32
  5. Step 5: Solve for x
    x = 6,581,464.32/2,851.04
  6. Step 6: Final answer
    x = 2,308.44

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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.