Home / 1,680.46-2,521.37-755.40

Finding the Fourth Proportional to 1,680.46, 2,521.37 and 755.40

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Solution

The fourth proportional to 1,680.46, 2,521.37 and 755.40 is: 1,133.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.46 : 2,521.37 = 755.40 : x
  2. Step 2: Convert to fraction form
    1,680.46/2,521.37 = 755.40/x
  3. Step 3: Cross multiply
    1,680.46x = 2,521.37 × 755.40
  4. Step 4: Simplify right side
    1,680.46x = 1,904,642.90
  5. Step 5: Solve for x
    x = 1,904,642.90/1,680.46
  6. Step 6: Final answer
    x = 1,133.41

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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.