Home / 4,082.60-6,120.90-1,307.68

Finding the Fourth Proportional to 4,082.60, 6,120.90 and 1,307.68

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Solution

The fourth proportional to 4,082.60, 6,120.90 and 1,307.68 is: 1,960.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,082.60 : 6,120.90 = 1,307.68 : x
  2. Step 2: Convert to fraction form
    4,082.60/6,120.90 = 1,307.68/x
  3. Step 3: Cross multiply
    4,082.60x = 6,120.90 × 1,307.68
  4. Step 4: Simplify right side
    4,082.60x = 8,004,178.51
  5. Step 5: Solve for x
    x = 8,004,178.51/4,082.60
  6. Step 6: Final answer
    x = 1,960.56

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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.