Home / 2,891.21-4,336.45-1,246.40

Finding the Fourth Proportional to 2,891.21, 4,336.45 and 1,246.40

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Solution

The fourth proportional to 2,891.21, 4,336.45 and 1,246.40 is: 1,869.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.21 : 4,336.45 = 1,246.40 : x
  2. Step 2: Convert to fraction form
    2,891.21/4,336.45 = 1,246.40/x
  3. Step 3: Cross multiply
    2,891.21x = 4,336.45 × 1,246.40
  4. Step 4: Simplify right side
    2,891.21x = 5,404,926.48
  5. Step 5: Solve for x
    x = 5,404,926.48/2,891.21
  6. Step 6: Final answer
    x = 1,869.44

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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.