Home / 1,040.40-1,426.32-1,039.14

Finding the Fourth Proportional to 1,040.40, 1,426.32 and 1,039.14

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Solution

The fourth proportional to 1,040.40, 1,426.32 and 1,039.14 is: 1,424.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040.40 : 1,426.32 = 1,039.14 : x
  2. Step 2: Convert to fraction form
    1,040.40/1,426.32 = 1,039.14/x
  3. Step 3: Cross multiply
    1,040.40x = 1,426.32 × 1,039.14
  4. Step 4: Simplify right side
    1,040.40x = 1,482,146.16
  5. Step 5: Solve for x
    x = 1,482,146.16/1,040.40
  6. Step 6: Final answer
    x = 1,424.59

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.