Home / 7,690.90-11,528.52-3,528.04

Finding the Fourth Proportional to 7,690.90, 11,528.52 and 3,528.04

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Solution

The fourth proportional to 7,690.90, 11,528.52 and 3,528.04 is: 5,288.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,690.90 : 11,528.52 = 3,528.04 : x
  2. Step 2: Convert to fraction form
    7,690.90/11,528.52 = 3,528.04/x
  3. Step 3: Cross multiply
    7,690.90x = 11,528.52 × 3,528.04
  4. Step 4: Simplify right side
    7,690.90x = 40,673,079.70
  5. Step 5: Solve for x
    x = 40,673,079.70/7,690.90
  6. Step 6: Final answer
    x = 5,288.47

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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.