Home / 1,511.24-2,264.68-860.60

Finding the Fourth Proportional to 1,511.24, 2,264.68 and 860.60

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Solution

The fourth proportional to 1,511.24, 2,264.68 and 860.60 is: 1,289.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.24 : 2,264.68 = 860.60 : x
  2. Step 2: Convert to fraction form
    1,511.24/2,264.68 = 860.60/x
  3. Step 3: Cross multiply
    1,511.24x = 2,264.68 × 860.60
  4. Step 4: Simplify right side
    1,511.24x = 1,948,983.61
  5. Step 5: Solve for x
    x = 1,948,983.61/1,511.24
  6. Step 6: Final answer
    x = 1,289.66

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1.5x scale

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.