Home / 1,926.96-2,890.76-628.40

Finding the Fourth Proportional to 1,926.96, 2,890.76 and 628.40

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Solution

The fourth proportional to 1,926.96, 2,890.76 and 628.40 is: 942.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926.96 : 2,890.76 = 628.40 : x
  2. Step 2: Convert to fraction form
    1,926.96/2,890.76 = 628.40/x
  3. Step 3: Cross multiply
    1,926.96x = 2,890.76 × 628.40
  4. Step 4: Simplify right side
    1,926.96x = 1,816,553.58
  5. Step 5: Solve for x
    x = 1,816,553.58/1,926.96
  6. Step 6: Final answer
    x = 942.70

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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.