Home / 1,575.36-2,171.34-1,103.40

Finding the Fourth Proportional to 1,575.36, 2,171.34 and 1,103.40

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Solution

The fourth proportional to 1,575.36, 2,171.34 and 1,103.40 is: 1,520.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,575.36 : 2,171.34 = 1,103.40 : x
  2. Step 2: Convert to fraction form
    1,575.36/2,171.34 = 1,103.40/x
  3. Step 3: Cross multiply
    1,575.36x = 2,171.34 × 1,103.40
  4. Step 4: Simplify right side
    1,575.36x = 2,395,856.56
  5. Step 5: Solve for x
    x = 2,395,856.56/1,575.36
  6. Step 6: Final answer
    x = 1,520.83

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1.5x scale

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.