Home / 2,823.64-3,897.66-2,123.80

Finding the Fourth Proportional to 2,823.64, 3,897.66 and 2,123.80

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Solution

The fourth proportional to 2,823.64, 3,897.66 and 2,123.80 is: 2,931.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,823.64 : 3,897.66 = 2,123.80 : x
  2. Step 2: Convert to fraction form
    2,823.64/3,897.66 = 2,123.80/x
  3. Step 3: Cross multiply
    2,823.64x = 3,897.66 × 2,123.80
  4. Step 4: Simplify right side
    2,823.64x = 8,277,850.31
  5. Step 5: Solve for x
    x = 8,277,850.31/2,823.64
  6. Step 6: Final answer
    x = 2,931.62

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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.