Home / 1,399.07-2,095.36-1,242.74

Finding the Fourth Proportional to 1,399.07, 2,095.36 and 1,242.74

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Solution

The fourth proportional to 1,399.07, 2,095.36 and 1,242.74 is: 1,861.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399.07 : 2,095.36 = 1,242.74 : x
  2. Step 2: Convert to fraction form
    1,399.07/2,095.36 = 1,242.74/x
  3. Step 3: Cross multiply
    1,399.07x = 2,095.36 × 1,242.74
  4. Step 4: Simplify right side
    1,399.07x = 2,603,987.69
  5. Step 5: Solve for x
    x = 2,603,987.69/1,399.07
  6. Step 6: Final answer
    x = 1,861.23

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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.