Home / 7,689.16-11,529.64-3,982.20

Finding the Fourth Proportional to 7,689.16, 11,529.64 and 3,982.20

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Solution

The fourth proportional to 7,689.16, 11,529.64 and 3,982.20 is: 5,971.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,689.16 : 11,529.64 = 3,982.20 : x
  2. Step 2: Convert to fraction form
    7,689.16/11,529.64 = 3,982.20/x
  3. Step 3: Cross multiply
    7,689.16x = 11,529.64 × 3,982.20
  4. Step 4: Simplify right side
    7,689.16x = 45,913,323.23
  5. Step 5: Solve for x
    x = 45,913,323.23/7,689.16
  6. Step 6: Final answer
    x = 5,971.17

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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.