Home / 1,680.18-2,519.91-525.66

Finding the Fourth Proportional to 1,680.18, 2,519.91 and 525.66

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Solution

The fourth proportional to 1,680.18, 2,519.91 and 525.66 is: 788.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.18 : 2,519.91 = 525.66 : x
  2. Step 2: Convert to fraction form
    1,680.18/2,519.91 = 525.66/x
  3. Step 3: Cross multiply
    1,680.18x = 2,519.91 × 525.66
  4. Step 4: Simplify right side
    1,680.18x = 1,324,615.89
  5. Step 5: Solve for x
    x = 1,324,615.89/1,680.18
  6. Step 6: Final answer
    x = 788.38

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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.