Home / 1,476.70-2,040.36-1,289.90

Finding the Fourth Proportional to 1,476.70, 2,040.36 and 1,289.90

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Solution

The fourth proportional to 1,476.70, 2,040.36 and 1,289.90 is: 1,782.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,476.70 : 2,040.36 = 1,289.90 : x
  2. Step 2: Convert to fraction form
    1,476.70/2,040.36 = 1,289.90/x
  3. Step 3: Cross multiply
    1,476.70x = 2,040.36 × 1,289.90
  4. Step 4: Simplify right side
    1,476.70x = 2,631,860.36
  5. Step 5: Solve for x
    x = 2,631,860.36/1,476.70
  6. Step 6: Final answer
    x = 1,782.26

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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.