Home / 1,515.40-2,273.08-826.44

Finding the Fourth Proportional to 1,515.40, 2,273.08 and 826.44

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Solution

The fourth proportional to 1,515.40, 2,273.08 and 826.44 is: 1,239.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.40 : 2,273.08 = 826.44 : x
  2. Step 2: Convert to fraction form
    1,515.40/2,273.08 = 826.44/x
  3. Step 3: Cross multiply
    1,515.40x = 2,273.08 × 826.44
  4. Step 4: Simplify right side
    1,515.40x = 1,878,564.24
  5. Step 5: Solve for x
    x = 1,878,564.24/1,515.40
  6. Step 6: Final answer
    x = 1,239.65

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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.