Home / 1,440.14-1,974.66-1,299.74

Finding the Fourth Proportional to 1,440.14, 1,974.66 and 1,299.74

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Solution

The fourth proportional to 1,440.14, 1,974.66 and 1,299.74 is: 1,782.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.14 : 1,974.66 = 1,299.74 : x
  2. Step 2: Convert to fraction form
    1,440.14/1,974.66 = 1,299.74/x
  3. Step 3: Cross multiply
    1,440.14x = 1,974.66 × 1,299.74
  4. Step 4: Simplify right side
    1,440.14x = 2,566,538.09
  5. Step 5: Solve for x
    x = 2,566,538.09/1,440.14
  6. Step 6: Final answer
    x = 1,782.14

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1.5x scale

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.