Home / 1,276.24-1,914.54-660.01

Finding the Fourth Proportional to 1,276.24, 1,914.54 and 660.01

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Solution

The fourth proportional to 1,276.24, 1,914.54 and 660.01 is: 990.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.24 : 1,914.54 = 660.01 : x
  2. Step 2: Convert to fraction form
    1,276.24/1,914.54 = 660.01/x
  3. Step 3: Cross multiply
    1,276.24x = 1,914.54 × 660.01
  4. Step 4: Simplify right side
    1,276.24x = 1,263,615.55
  5. Step 5: Solve for x
    x = 1,263,615.55/1,276.24
  6. Step 6: Final answer
    x = 990.11

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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.