Home / 1,240.30-1,709.67-1,004.59

Finding the Fourth Proportional to 1,240.30, 1,709.67 and 1,004.59

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Solution

The fourth proportional to 1,240.30, 1,709.67 and 1,004.59 is: 1,384.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240.30 : 1,709.67 = 1,004.59 : x
  2. Step 2: Convert to fraction form
    1,240.30/1,709.67 = 1,004.59/x
  3. Step 3: Cross multiply
    1,240.30x = 1,709.67 × 1,004.59
  4. Step 4: Simplify right side
    1,240.30x = 1,717,517.39
  5. Step 5: Solve for x
    x = 1,717,517.39/1,240.30
  6. Step 6: Final answer
    x = 1,384.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.