Home / 1,276.56-1,914.98-546.21

Finding the Fourth Proportional to 1,276.56, 1,914.98 and 546.21

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Solution

The fourth proportional to 1,276.56, 1,914.98 and 546.21 is: 819.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.56 : 1,914.98 = 546.21 : x
  2. Step 2: Convert to fraction form
    1,276.56/1,914.98 = 546.21/x
  3. Step 3: Cross multiply
    1,276.56x = 1,914.98 × 546.21
  4. Step 4: Simplify right side
    1,276.56x = 1,045,981.23
  5. Step 5: Solve for x
    x = 1,045,981.23/1,276.56
  6. Step 6: Final answer
    x = 819.37

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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.