Home / 1,386.20-1,911.68-1,033.00

Finding the Fourth Proportional to 1,386.20, 1,911.68 and 1,033.00

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Solution

The fourth proportional to 1,386.20, 1,911.68 and 1,033.00 is: 1,424.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386.20 : 1,911.68 = 1,033.00 : x
  2. Step 2: Convert to fraction form
    1,386.20/1,911.68 = 1,033.00/x
  3. Step 3: Cross multiply
    1,386.20x = 1,911.68 × 1,033.00
  4. Step 4: Simplify right side
    1,386.20x = 1,974,755.88
  5. Step 5: Solve for x
    x = 1,974,755.88/1,386.20
  6. Step 6: Final answer
    x = 1,424.58

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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.