Home / 2,209.06-3,312.94-1,590.90

Finding the Fourth Proportional to 2,209.06, 3,312.94 and 1,590.90

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Solution

The fourth proportional to 2,209.06, 3,312.94 and 1,590.90 is: 2,385.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.06 : 3,312.94 = 1,590.90 : x
  2. Step 2: Convert to fraction form
    2,209.06/3,312.94 = 1,590.90/x
  3. Step 3: Cross multiply
    2,209.06x = 3,312.94 × 1,590.90
  4. Step 4: Simplify right side
    2,209.06x = 5,270,556.25
  5. Step 5: Solve for x
    x = 5,270,556.25/2,209.06
  6. Step 6: Final answer
    x = 2,385.88

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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.