Home / 3,123.79-4,684.37-1,273.64

Finding the Fourth Proportional to 3,123.79, 4,684.37 and 1,273.64

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Solution

The fourth proportional to 3,123.79, 4,684.37 and 1,273.64 is: 1,909.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.79 : 4,684.37 = 1,273.64 : x
  2. Step 2: Convert to fraction form
    3,123.79/4,684.37 = 1,273.64/x
  3. Step 3: Cross multiply
    3,123.79x = 4,684.37 × 1,273.64
  4. Step 4: Simplify right side
    3,123.79x = 5,966,215.90
  5. Step 5: Solve for x
    x = 5,966,215.90/3,123.79
  6. Step 6: Final answer
    x = 1,909.93

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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.