Home / 2,988.45-4,479.27-1,426.23

Finding the Fourth Proportional to 2,988.45, 4,479.27 and 1,426.23

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Solution

The fourth proportional to 2,988.45, 4,479.27 and 1,426.23 is: 2,137.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.45 : 4,479.27 = 1,426.23 : x
  2. Step 2: Convert to fraction form
    2,988.45/4,479.27 = 1,426.23/x
  3. Step 3: Cross multiply
    2,988.45x = 4,479.27 × 1,426.23
  4. Step 4: Simplify right side
    2,988.45x = 6,388,469.25
  5. Step 5: Solve for x
    x = 6,388,469.25/2,988.45
  6. Step 6: Final answer
    x = 2,137.72

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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.