Home / 7,720.14-11,579.70-2,455.05

Finding the Fourth Proportional to 7,720.14, 11,579.70 and 2,455.05

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Solution

The fourth proportional to 7,720.14, 11,579.70 and 2,455.05 is: 3,682.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.14 : 11,579.70 = 2,455.05 : x
  2. Step 2: Convert to fraction form
    7,720.14/11,579.70 = 2,455.05/x
  3. Step 3: Cross multiply
    7,720.14x = 11,579.70 × 2,455.05
  4. Step 4: Simplify right side
    7,720.14x = 28,428,742.49
  5. Step 5: Solve for x
    x = 28,428,742.49/7,720.14
  6. Step 6: Final answer
    x = 3,682.41

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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.