Home / 2,643.20-3,652.80-2,170.34

Finding the Fourth Proportional to 2,643.20, 3,652.80 and 2,170.34

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Solution

The fourth proportional to 2,643.20, 3,652.80 and 2,170.34 is: 2,999.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.20 : 3,652.80 = 2,170.34 : x
  2. Step 2: Convert to fraction form
    2,643.20/3,652.80 = 2,170.34/x
  3. Step 3: Cross multiply
    2,643.20x = 3,652.80 × 2,170.34
  4. Step 4: Simplify right side
    2,643.20x = 7,927,817.95
  5. Step 5: Solve for x
    x = 7,927,817.95/2,643.20
  6. Step 6: Final answer
    x = 2,999.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.