Home / 2,145.47-3,217.95-1,456.56

Finding the Fourth Proportional to 2,145.47, 3,217.95 and 1,456.56

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Solution

The fourth proportional to 2,145.47, 3,217.95 and 1,456.56 is: 2,184.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.47 : 3,217.95 = 1,456.56 : x
  2. Step 2: Convert to fraction form
    2,145.47/3,217.95 = 1,456.56/x
  3. Step 3: Cross multiply
    2,145.47x = 3,217.95 × 1,456.56
  4. Step 4: Simplify right side
    2,145.47x = 4,687,137.25
  5. Step 5: Solve for x
    x = 4,687,137.25/2,145.47
  6. Step 6: Final answer
    x = 2,184.67

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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.