Home / 2,156.53-2,975.98-1,224.97

Finding the Fourth Proportional to 2,156.53, 2,975.98 and 1,224.97

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Solution

The fourth proportional to 2,156.53, 2,975.98 and 1,224.97 is: 1,690.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.53 : 2,975.98 = 1,224.97 : x
  2. Step 2: Convert to fraction form
    2,156.53/2,975.98 = 1,224.97/x
  3. Step 3: Cross multiply
    2,156.53x = 2,975.98 × 1,224.97
  4. Step 4: Simplify right side
    2,156.53x = 3,645,486.22
  5. Step 5: Solve for x
    x = 3,645,486.22/2,156.53
  6. Step 6: Final answer
    x = 1,690.44

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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.