Home / 2,564.80-3,539.90-1,621.05

Finding the Fourth Proportional to 2,564.80, 3,539.90 and 1,621.05

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Solution

The fourth proportional to 2,564.80, 3,539.90 and 1,621.05 is: 2,237.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,564.80 : 3,539.90 = 1,621.05 : x
  2. Step 2: Convert to fraction form
    2,564.80/3,539.90 = 1,621.05/x
  3. Step 3: Cross multiply
    2,564.80x = 3,539.90 × 1,621.05
  4. Step 4: Simplify right side
    2,564.80x = 5,738,354.90
  5. Step 5: Solve for x
    x = 5,738,354.90/2,564.80
  6. Step 6: Final answer
    x = 2,237.35

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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.