Home / 2,156.02-2,974.78-1,211.62

Finding the Fourth Proportional to 2,156.02, 2,974.78 and 1,211.62

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Solution

The fourth proportional to 2,156.02, 2,974.78 and 1,211.62 is: 1,671.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.02 : 2,974.78 = 1,211.62 : x
  2. Step 2: Convert to fraction form
    2,156.02/2,974.78 = 1,211.62/x
  3. Step 3: Cross multiply
    2,156.02x = 2,974.78 × 1,211.62
  4. Step 4: Simplify right side
    2,156.02x = 3,604,299.97
  5. Step 5: Solve for x
    x = 3,604,299.97/2,156.02
  6. Step 6: Final answer
    x = 1,671.74

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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.