Home / 1,853.97-2,778.93-1,123.35

Finding the Fourth Proportional to 1,853.97, 2,778.93 and 1,123.35

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Solution

The fourth proportional to 1,853.97, 2,778.93 and 1,123.35 is: 1,683.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,853.97 : 2,778.93 = 1,123.35 : x
  2. Step 2: Convert to fraction form
    1,853.97/2,778.93 = 1,123.35/x
  3. Step 3: Cross multiply
    1,853.97x = 2,778.93 × 1,123.35
  4. Step 4: Simplify right side
    1,853.97x = 3,121,711.02
  5. Step 5: Solve for x
    x = 3,121,711.02/1,853.97
  6. Step 6: Final answer
    x = 1,683.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.