Home / 1,216.34-1,679.73-1,040.66

Finding the Fourth Proportional to 1,216.34, 1,679.73 and 1,040.66

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Solution

The fourth proportional to 1,216.34, 1,679.73 and 1,040.66 is: 1,437.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216.34 : 1,679.73 = 1,040.66 : x
  2. Step 2: Convert to fraction form
    1,216.34/1,679.73 = 1,040.66/x
  3. Step 3: Cross multiply
    1,216.34x = 1,679.73 × 1,040.66
  4. Step 4: Simplify right side
    1,216.34x = 1,748,027.82
  5. Step 5: Solve for x
    x = 1,748,027.82/1,216.34
  6. Step 6: Final answer
    x = 1,437.12

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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.