Home / 1,622.08-2,431.32-1,036.40

Finding the Fourth Proportional to 1,622.08, 2,431.32 and 1,036.40

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Solution

The fourth proportional to 1,622.08, 2,431.32 and 1,036.40 is: 1,553.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.08 : 2,431.32 = 1,036.40 : x
  2. Step 2: Convert to fraction form
    1,622.08/2,431.32 = 1,036.40/x
  3. Step 3: Cross multiply
    1,622.08x = 2,431.32 × 1,036.40
  4. Step 4: Simplify right side
    1,622.08x = 2,519,820.05
  5. Step 5: Solve for x
    x = 2,519,820.05/1,622.08
  6. Step 6: Final answer
    x = 1,553.45

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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.