Home / 1,040.36-1,436.06-892.40

Finding the Fourth Proportional to 1,040.36, 1,436.06 and 892.40

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Solution

The fourth proportional to 1,040.36, 1,436.06 and 892.40 is: 1,231.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.36 : 1,436.06 = 892.40 : x
  2. Step 2: Convert to fraction form
    1,040.36/1,436.06 = 892.40/x
  3. Step 3: Cross multiply
    1,040.36x = 1,436.06 × 892.40
  4. Step 4: Simplify right side
    1,040.36x = 1,281,534.99
  5. Step 5: Solve for x
    x = 1,281,534.99/1,040.36
  6. Step 6: Final answer
    x = 1,231.82

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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.