Home / 1,515.52-2,272.13-784.63

Finding the Fourth Proportional to 1,515.52, 2,272.13 and 784.63

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Solution

The fourth proportional to 1,515.52, 2,272.13 and 784.63 is: 1,176.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.52 : 2,272.13 = 784.63 : x
  2. Step 2: Convert to fraction form
    1,515.52/2,272.13 = 784.63/x
  3. Step 3: Cross multiply
    1,515.52x = 2,272.13 × 784.63
  4. Step 4: Simplify right side
    1,515.52x = 1,782,771.76
  5. Step 5: Solve for x
    x = 1,782,771.76/1,515.52
  6. Step 6: Final answer
    x = 1,176.35

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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.