Home / 2,108.58-2,909.73-1,224.24

Finding the Fourth Proportional to 2,108.58, 2,909.73 and 1,224.24

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Solution

The fourth proportional to 2,108.58, 2,909.73 and 1,224.24 is: 1,689.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.58 : 2,909.73 = 1,224.24 : x
  2. Step 2: Convert to fraction form
    2,108.58/2,909.73 = 1,224.24/x
  3. Step 3: Cross multiply
    2,108.58x = 2,909.73 × 1,224.24
  4. Step 4: Simplify right side
    2,108.58x = 3,562,207.86
  5. Step 5: Solve for x
    x = 3,562,207.86/2,108.58
  6. Step 6: Final answer
    x = 1,689.39

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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.