Home / 1,511.11-2,265.43-646.03

Finding the Fourth Proportional to 1,511.11, 2,265.43 and 646.03

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Solution

The fourth proportional to 1,511.11, 2,265.43 and 646.03 is: 968.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.11 : 2,265.43 = 646.03 : x
  2. Step 2: Convert to fraction form
    1,511.11/2,265.43 = 646.03/x
  3. Step 3: Cross multiply
    1,511.11x = 2,265.43 × 646.03
  4. Step 4: Simplify right side
    1,511.11x = 1,463,535.74
  5. Step 5: Solve for x
    x = 1,463,535.74/1,511.11
  6. Step 6: Final answer
    x = 968.52

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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.