Home / 1,877.40-2,585.79-1,628.73

Finding the Fourth Proportional to 1,877.40, 2,585.79 and 1,628.73

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Solution

The fourth proportional to 1,877.40, 2,585.79 and 1,628.73 is: 2,243.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877.40 : 2,585.79 = 1,628.73 : x
  2. Step 2: Convert to fraction form
    1,877.40/2,585.79 = 1,628.73/x
  3. Step 3: Cross multiply
    1,877.40x = 2,585.79 × 1,628.73
  4. Step 4: Simplify right side
    1,877.40x = 4,211,553.75
  5. Step 5: Solve for x
    x = 4,211,553.75/1,877.40
  6. Step 6: Final answer
    x = 2,243.29

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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.