Home / 7,776.10-11,657.62-3,390.26

Finding the Fourth Proportional to 7,776.10, 11,657.62 and 3,390.26

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Solution

The fourth proportional to 7,776.10, 11,657.62 and 3,390.26 is: 5,082.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,776.10 : 11,657.62 = 3,390.26 : x
  2. Step 2: Convert to fraction form
    7,776.10/11,657.62 = 3,390.26/x
  3. Step 3: Cross multiply
    7,776.10x = 11,657.62 × 3,390.26
  4. Step 4: Simplify right side
    7,776.10x = 39,522,362.78
  5. Step 5: Solve for x
    x = 39,522,362.78/7,776.10
  6. Step 6: Final answer
    x = 5,082.54

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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.