Home / 1,643.40-2,466.36-1,122.30

Finding the Fourth Proportional to 1,643.40, 2,466.36 and 1,122.30

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Solution

The fourth proportional to 1,643.40, 2,466.36 and 1,122.30 is: 1,684.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643.40 : 2,466.36 = 1,122.30 : x
  2. Step 2: Convert to fraction form
    1,643.40/2,466.36 = 1,122.30/x
  3. Step 3: Cross multiply
    1,643.40x = 2,466.36 × 1,122.30
  4. Step 4: Simplify right side
    1,643.40x = 2,767,995.83
  5. Step 5: Solve for x
    x = 2,767,995.83/1,643.40
  6. Step 6: Final answer
    x = 1,684.31

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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.