Home / 1,476.07-2,036.94-812.90

Finding the Fourth Proportional to 1,476.07, 2,036.94 and 812.90

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Solution

The fourth proportional to 1,476.07, 2,036.94 and 812.90 is: 1,121.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,476.07 : 2,036.94 = 812.90 : x
  2. Step 2: Convert to fraction form
    1,476.07/2,036.94 = 812.90/x
  3. Step 3: Cross multiply
    1,476.07x = 2,036.94 × 812.90
  4. Step 4: Simplify right side
    1,476.07x = 1,655,828.53
  5. Step 5: Solve for x
    x = 1,655,828.53/1,476.07
  6. Step 6: Final answer
    x = 1,121.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.