Home / 1,276.84-1,913.58-545.54

Finding the Fourth Proportional to 1,276.84, 1,913.58 and 545.54

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Solution

The fourth proportional to 1,276.84, 1,913.58 and 545.54 is: 817.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.84 : 1,913.58 = 545.54 : x
  2. Step 2: Convert to fraction form
    1,276.84/1,913.58 = 545.54/x
  3. Step 3: Cross multiply
    1,276.84x = 1,913.58 × 545.54
  4. Step 4: Simplify right side
    1,276.84x = 1,043,934.43
  5. Step 5: Solve for x
    x = 1,043,934.43/1,276.84
  6. Step 6: Final answer
    x = 817.59

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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.