Home / 1,529.55-2,107.76-1,086.21

Finding the Fourth Proportional to 1,529.55, 2,107.76 and 1,086.21

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Solution

The fourth proportional to 1,529.55, 2,107.76 and 1,086.21 is: 1,496.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.55 : 2,107.76 = 1,086.21 : x
  2. Step 2: Convert to fraction form
    1,529.55/2,107.76 = 1,086.21/x
  3. Step 3: Cross multiply
    1,529.55x = 2,107.76 × 1,086.21
  4. Step 4: Simplify right side
    1,529.55x = 2,289,464.56
  5. Step 5: Solve for x
    x = 2,289,464.56/1,529.55
  6. Step 6: Final answer
    x = 1,496.82

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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.