Home / 1,610.72-2,222.06-1,138.64

Finding the Fourth Proportional to 1,610.72, 2,222.06 and 1,138.64

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Solution

The fourth proportional to 1,610.72, 2,222.06 and 1,138.64 is: 1,570.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,610.72 : 2,222.06 = 1,138.64 : x
  2. Step 2: Convert to fraction form
    1,610.72/2,222.06 = 1,138.64/x
  3. Step 3: Cross multiply
    1,610.72x = 2,222.06 × 1,138.64
  4. Step 4: Simplify right side
    1,610.72x = 2,530,126.40
  5. Step 5: Solve for x
    x = 2,530,126.40/1,610.72
  6. Step 6: Final answer
    x = 1,570.80

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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.