Home / 1,389.74-2,086.99-1,233.92

Finding the Fourth Proportional to 1,389.74, 2,086.99 and 1,233.92

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Solution

The fourth proportional to 1,389.74, 2,086.99 and 1,233.92 is: 1,852.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389.74 : 2,086.99 = 1,233.92 : x
  2. Step 2: Convert to fraction form
    1,389.74/2,086.99 = 1,233.92/x
  3. Step 3: Cross multiply
    1,389.74x = 2,086.99 × 1,233.92
  4. Step 4: Simplify right side
    1,389.74x = 2,575,172.12
  5. Step 5: Solve for x
    x = 2,575,172.12/1,389.74
  6. Step 6: Final answer
    x = 1,852.99

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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.