Home / 1,985.32-2,972.46-1,009.32

Finding the Fourth Proportional to 1,985.32, 2,972.46 and 1,009.32

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Solution

The fourth proportional to 1,985.32, 2,972.46 and 1,009.32 is: 1,511.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.32 : 2,972.46 = 1,009.32 : x
  2. Step 2: Convert to fraction form
    1,985.32/2,972.46 = 1,009.32/x
  3. Step 3: Cross multiply
    1,985.32x = 2,972.46 × 1,009.32
  4. Step 4: Simplify right side
    1,985.32x = 3,000,163.33
  5. Step 5: Solve for x
    x = 3,000,163.33/1,985.32
  6. Step 6: Final answer
    x = 1,511.17

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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.