Home / 1,519.20-2,267.66-1,311.48

Finding the Fourth Proportional to 1,519.20, 2,267.66 and 1,311.48

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Solution

The fourth proportional to 1,519.20, 2,267.66 and 1,311.48 is: 1,957.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.20 : 2,267.66 = 1,311.48 : x
  2. Step 2: Convert to fraction form
    1,519.20/2,267.66 = 1,311.48/x
  3. Step 3: Cross multiply
    1,519.20x = 2,267.66 × 1,311.48
  4. Step 4: Simplify right side
    1,519.20x = 2,973,994.02
  5. Step 5: Solve for x
    x = 2,973,994.02/1,519.20
  6. Step 6: Final answer
    x = 1,957.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.