Home / 1,790.85-2,686.77-1,518.87

Finding the Fourth Proportional to 1,790.85, 2,686.77 and 1,518.87

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Solution

The fourth proportional to 1,790.85, 2,686.77 and 1,518.87 is: 2,278.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.85 : 2,686.77 = 1,518.87 : x
  2. Step 2: Convert to fraction form
    1,790.85/2,686.77 = 1,518.87/x
  3. Step 3: Cross multiply
    1,790.85x = 2,686.77 × 1,518.87
  4. Step 4: Simplify right side
    1,790.85x = 4,080,854.35
  5. Step 5: Solve for x
    x = 4,080,854.35/1,790.85
  6. Step 6: Final answer
    x = 2,278.72

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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.