Home / 1,512.18-2,086.38-1,313.82

Finding the Fourth Proportional to 1,512.18, 2,086.38 and 1,313.82

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Solution

The fourth proportional to 1,512.18, 2,086.38 and 1,313.82 is: 1,812.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.18 : 2,086.38 = 1,313.82 : x
  2. Step 2: Convert to fraction form
    1,512.18/2,086.38 = 1,313.82/x
  3. Step 3: Cross multiply
    1,512.18x = 2,086.38 × 1,313.82
  4. Step 4: Simplify right side
    1,512.18x = 2,741,127.77
  5. Step 5: Solve for x
    x = 2,741,127.77/1,512.18
  6. Step 6: Final answer
    x = 1,812.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.