Home / 5,378.49-8,068.14-1,680.84

Finding the Fourth Proportional to 5,378.49, 8,068.14 and 1,680.84

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Solution

The fourth proportional to 5,378.49, 8,068.14 and 1,680.84 is: 2,521.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.49 : 8,068.14 = 1,680.84 : x
  2. Step 2: Convert to fraction form
    5,378.49/8,068.14 = 1,680.84/x
  3. Step 3: Cross multiply
    5,378.49x = 8,068.14 × 1,680.84
  4. Step 4: Simplify right side
    5,378.49x = 13,561,252.44
  5. Step 5: Solve for x
    x = 13,561,252.44/5,378.49
  6. Step 6: Final answer
    x = 2,521.39

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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.