Home / 3,628.90-5,445.93-1,438.10

Finding the Fourth Proportional to 3,628.90, 5,445.93 and 1,438.10

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Solution

The fourth proportional to 3,628.90, 5,445.93 and 1,438.10 is: 2,158.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,628.90 : 5,445.93 = 1,438.10 : x
  2. Step 2: Convert to fraction form
    3,628.90/5,445.93 = 1,438.10/x
  3. Step 3: Cross multiply
    3,628.90x = 5,445.93 × 1,438.10
  4. Step 4: Simplify right side
    3,628.90x = 7,831,821.15
  5. Step 5: Solve for x
    x = 7,831,821.15/3,628.90
  6. Step 6: Final answer
    x = 2,158.18

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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.