Home / 1,276.41-1,914.75-454.76

Finding the Fourth Proportional to 1,276.41, 1,914.75 and 454.76

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Solution

The fourth proportional to 1,276.41, 1,914.75 and 454.76 is: 682.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.41 : 1,914.75 = 454.76 : x
  2. Step 2: Convert to fraction form
    1,276.41/1,914.75 = 454.76/x
  3. Step 3: Cross multiply
    1,276.41x = 1,914.75 × 454.76
  4. Step 4: Simplify right side
    1,276.41x = 870,751.71
  5. Step 5: Solve for x
    x = 870,751.71/1,276.41
  6. Step 6: Final answer
    x = 682.19

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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.