Home / 1,515.68-2,090.52-1,043.73

Finding the Fourth Proportional to 1,515.68, 2,090.52 and 1,043.73

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Solution

The fourth proportional to 1,515.68, 2,090.52 and 1,043.73 is: 1,439.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.68 : 2,090.52 = 1,043.73 : x
  2. Step 2: Convert to fraction form
    1,515.68/2,090.52 = 1,043.73/x
  3. Step 3: Cross multiply
    1,515.68x = 2,090.52 × 1,043.73
  4. Step 4: Simplify right side
    1,515.68x = 2,181,928.64
  5. Step 5: Solve for x
    x = 2,181,928.64/1,515.68
  6. Step 6: Final answer
    x = 1,439.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.