Home / 2,108.68-2,910.09-1,224.76

Finding the Fourth Proportional to 2,108.68, 2,910.09 and 1,224.76

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Solution

The fourth proportional to 2,108.68, 2,910.09 and 1,224.76 is: 1,690.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.68 : 2,910.09 = 1,224.76 : x
  2. Step 2: Convert to fraction form
    2,108.68/2,910.09 = 1,224.76/x
  3. Step 3: Cross multiply
    2,108.68x = 2,910.09 × 1,224.76
  4. Step 4: Simplify right side
    2,108.68x = 3,564,161.83
  5. Step 5: Solve for x
    x = 3,564,161.83/2,108.68
  6. Step 6: Final answer
    x = 1,690.23

Related Problems

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Half scale
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Double scale
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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.