Home / 5,618.88-8,428.49-1,920.46

Finding the Fourth Proportional to 5,618.88, 8,428.49 and 1,920.46

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Solution

The fourth proportional to 5,618.88, 8,428.49 and 1,920.46 is: 2,880.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.88 : 8,428.49 = 1,920.46 : x
  2. Step 2: Convert to fraction form
    5,618.88/8,428.49 = 1,920.46/x
  3. Step 3: Cross multiply
    5,618.88x = 8,428.49 × 1,920.46
  4. Step 4: Simplify right side
    5,618.88x = 16,186,578.34
  5. Step 5: Solve for x
    x = 16,186,578.34/5,618.88
  6. Step 6: Final answer
    x = 2,880.75

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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.