Home / 2,152.52-3,228.78-1,421.93

Finding the Fourth Proportional to 2,152.52, 3,228.78 and 1,421.93

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Solution

The fourth proportional to 2,152.52, 3,228.78 and 1,421.93 is: 2,132.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,152.52 : 3,228.78 = 1,421.93 : x
  2. Step 2: Convert to fraction form
    2,152.52/3,228.78 = 1,421.93/x
  3. Step 3: Cross multiply
    2,152.52x = 3,228.78 × 1,421.93
  4. Step 4: Simplify right side
    2,152.52x = 4,591,099.15
  5. Step 5: Solve for x
    x = 4,591,099.15/2,152.52
  6. Step 6: Final answer
    x = 2,132.90

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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.