Home / 2,110.20-2,911.63-1,225.55

Finding the Fourth Proportional to 2,110.20, 2,911.63 and 1,225.55

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Solution

The fourth proportional to 2,110.20, 2,911.63 and 1,225.55 is: 1,690.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.20 : 2,911.63 = 1,225.55 : x
  2. Step 2: Convert to fraction form
    2,110.20/2,911.63 = 1,225.55/x
  3. Step 3: Cross multiply
    2,110.20x = 2,911.63 × 1,225.55
  4. Step 4: Simplify right side
    2,110.20x = 3,568,327.46
  5. Step 5: Solve for x
    x = 3,568,327.46/2,110.20
  6. Step 6: Final answer
    x = 1,690.99

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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.