Home / 1,515.38-2,271.39-637.63

Finding the Fourth Proportional to 1,515.38, 2,271.39 and 637.63

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Solution

The fourth proportional to 1,515.38, 2,271.39 and 637.63 is: 955.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.38 : 2,271.39 = 637.63 : x
  2. Step 2: Convert to fraction form
    1,515.38/2,271.39 = 637.63/x
  3. Step 3: Cross multiply
    1,515.38x = 2,271.39 × 637.63
  4. Step 4: Simplify right side
    1,515.38x = 1,448,301.92
  5. Step 5: Solve for x
    x = 1,448,301.92/1,515.38
  6. Step 6: Final answer
    x = 955.73

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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.