Home / 1,409.73-2,115.30-1,065.17

Finding the Fourth Proportional to 1,409.73, 2,115.30 and 1,065.17

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Solution

The fourth proportional to 1,409.73, 2,115.30 and 1,065.17 is: 1,598.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.73 : 2,115.30 = 1,065.17 : x
  2. Step 2: Convert to fraction form
    1,409.73/2,115.30 = 1,065.17/x
  3. Step 3: Cross multiply
    1,409.73x = 2,115.30 × 1,065.17
  4. Step 4: Simplify right side
    1,409.73x = 2,253,143.52
  5. Step 5: Solve for x
    x = 2,253,143.52/1,409.73
  6. Step 6: Final answer
    x = 1,598.28

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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.