Home / 1,511.25-2,265.51-537.13

Finding the Fourth Proportional to 1,511.25, 2,265.51 and 537.13

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Solution

The fourth proportional to 1,511.25, 2,265.51 and 537.13 is: 805.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.25 : 2,265.51 = 537.13 : x
  2. Step 2: Convert to fraction form
    1,511.25/2,265.51 = 537.13/x
  3. Step 3: Cross multiply
    1,511.25x = 2,265.51 × 537.13
  4. Step 4: Simplify right side
    1,511.25x = 1,216,871.86
  5. Step 5: Solve for x
    x = 1,216,871.86/1,511.25
  6. Step 6: Final answer
    x = 805.21

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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.