Home / 1,984.54-2,737.65-1,285.78

Finding the Fourth Proportional to 1,984.54, 2,737.65 and 1,285.78

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Solution

The fourth proportional to 1,984.54, 2,737.65 and 1,285.78 is: 1,773.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.54 : 2,737.65 = 1,285.78 : x
  2. Step 2: Convert to fraction form
    1,984.54/2,737.65 = 1,285.78/x
  3. Step 3: Cross multiply
    1,984.54x = 2,737.65 × 1,285.78
  4. Step 4: Simplify right side
    1,984.54x = 3,520,015.62
  5. Step 5: Solve for x
    x = 3,520,015.62/1,984.54
  6. Step 6: Final answer
    x = 1,773.72

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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.