Home / 2,220.58-3,332.91-1,125.70

Finding the Fourth Proportional to 2,220.58, 3,332.91 and 1,125.70

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Solution

The fourth proportional to 2,220.58, 3,332.91 and 1,125.70 is: 1,689.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.58 : 3,332.91 = 1,125.70 : x
  2. Step 2: Convert to fraction form
    2,220.58/3,332.91 = 1,125.70/x
  3. Step 3: Cross multiply
    2,220.58x = 3,332.91 × 1,125.70
  4. Step 4: Simplify right side
    2,220.58x = 3,751,856.79
  5. Step 5: Solve for x
    x = 3,751,856.79/2,220.58
  6. Step 6: Final answer
    x = 1,689.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.