Home / 1,640.85-2,458.95-1,152.87

Finding the Fourth Proportional to 1,640.85, 2,458.95 and 1,152.87

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Solution

The fourth proportional to 1,640.85, 2,458.95 and 1,152.87 is: 1,727.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.85 : 2,458.95 = 1,152.87 : x
  2. Step 2: Convert to fraction form
    1,640.85/2,458.95 = 1,152.87/x
  3. Step 3: Cross multiply
    1,640.85x = 2,458.95 × 1,152.87
  4. Step 4: Simplify right side
    1,640.85x = 2,834,849.69
  5. Step 5: Solve for x
    x = 2,834,849.69/1,640.85
  6. Step 6: Final answer
    x = 1,727.67

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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.