Home / 2,108.06-2,909.76-1,224.08

Finding the Fourth Proportional to 2,108.06, 2,909.76 and 1,224.08

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Solution

The fourth proportional to 2,108.06, 2,909.76 and 1,224.08 is: 1,689.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.06 : 2,909.76 = 1,224.08 : x
  2. Step 2: Convert to fraction form
    2,108.06/2,909.76 = 1,224.08/x
  3. Step 3: Cross multiply
    2,108.06x = 2,909.76 × 1,224.08
  4. Step 4: Simplify right side
    2,108.06x = 3,561,779.02
  5. Step 5: Solve for x
    x = 3,561,779.02/2,108.06
  6. Step 6: Final answer
    x = 1,689.60

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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.