Home / 1,388.99-2,084.57-1,302.86

Finding the Fourth Proportional to 1,388.99, 2,084.57 and 1,302.86

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Solution

The fourth proportional to 1,388.99, 2,084.57 and 1,302.86 is: 1,955.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388.99 : 2,084.57 = 1,302.86 : x
  2. Step 2: Convert to fraction form
    1,388.99/2,084.57 = 1,302.86/x
  3. Step 3: Cross multiply
    1,388.99x = 2,084.57 × 1,302.86
  4. Step 4: Simplify right side
    1,388.99x = 2,715,902.87
  5. Step 5: Solve for x
    x = 2,715,902.87/1,388.99
  6. Step 6: Final answer
    x = 1,955.31

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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.