Home / 1,455.88-2,011.08-1,163.20

Finding the Fourth Proportional to 1,455.88, 2,011.08 and 1,163.20

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Solution

The fourth proportional to 1,455.88, 2,011.08 and 1,163.20 is: 1,606.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.88 : 2,011.08 = 1,163.20 : x
  2. Step 2: Convert to fraction form
    1,455.88/2,011.08 = 1,163.20/x
  3. Step 3: Cross multiply
    1,455.88x = 2,011.08 × 1,163.20
  4. Step 4: Simplify right side
    1,455.88x = 2,339,288.26
  5. Step 5: Solve for x
    x = 2,339,288.26/1,455.88
  6. Step 6: Final answer
    x = 1,606.79

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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.