Home / 3,151.91-4,730.38-1,420.67

Finding the Fourth Proportional to 3,151.91, 4,730.38 and 1,420.67

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Solution

The fourth proportional to 3,151.91, 4,730.38 and 1,420.67 is: 2,132.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.91 : 4,730.38 = 1,420.67 : x
  2. Step 2: Convert to fraction form
    3,151.91/4,730.38 = 1,420.67/x
  3. Step 3: Cross multiply
    3,151.91x = 4,730.38 × 1,420.67
  4. Step 4: Simplify right side
    3,151.91x = 6,720,281.75
  5. Step 5: Solve for x
    x = 6,720,281.75/3,151.91
  6. Step 6: Final answer
    x = 2,132.13

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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.