Home / 2,109.38-2,911.01-1,225.26

Finding the Fourth Proportional to 2,109.38, 2,911.01 and 1,225.26

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Solution

The fourth proportional to 2,109.38, 2,911.01 and 1,225.26 is: 1,690.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.38 : 2,911.01 = 1,225.26 : x
  2. Step 2: Convert to fraction form
    2,109.38/2,911.01 = 1,225.26/x
  3. Step 3: Cross multiply
    2,109.38x = 2,911.01 × 1,225.26
  4. Step 4: Simplify right side
    2,109.38x = 3,566,737.99
  5. Step 5: Solve for x
    x = 3,566,737.99/2,109.38
  6. Step 6: Final answer
    x = 1,690.90

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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.