Home / 7,522.77-11,285.19-3,139.20

Finding the Fourth Proportional to 7,522.77, 11,285.19 and 3,139.20

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Solution

The fourth proportional to 7,522.77, 11,285.19 and 3,139.20 is: 4,709.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,522.77 : 11,285.19 = 3,139.20 : x
  2. Step 2: Convert to fraction form
    7,522.77/11,285.19 = 3,139.20/x
  3. Step 3: Cross multiply
    7,522.77x = 11,285.19 × 3,139.20
  4. Step 4: Simplify right side
    7,522.77x = 35,426,468.45
  5. Step 5: Solve for x
    x = 35,426,468.45/7,522.77
  6. Step 6: Final answer
    x = 4,709.23

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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.