Home / 2,689.45-4,031.96-1,130.66

Finding the Fourth Proportional to 2,689.45, 4,031.96 and 1,130.66

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Solution

The fourth proportional to 2,689.45, 4,031.96 and 1,130.66 is: 1,695.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.45 : 4,031.96 = 1,130.66 : x
  2. Step 2: Convert to fraction form
    2,689.45/4,031.96 = 1,130.66/x
  3. Step 3: Cross multiply
    2,689.45x = 4,031.96 × 1,130.66
  4. Step 4: Simplify right side
    2,689.45x = 4,558,771.56
  5. Step 5: Solve for x
    x = 4,558,771.56/2,689.45
  6. Step 6: Final answer
    x = 1,695.06

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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.