Home / 3,632.60-5,445-1,438.28

Finding the Fourth Proportional to 3,632.60, 5,445 and 1,438.28

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Solution

The fourth proportional to 3,632.60, 5,445 and 1,438.28 is: 2,155.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,632.60 : 5,445 = 1,438.28 : x
  2. Step 2: Convert to fraction form
    3,632.60/5,445 = 1,438.28/x
  3. Step 3: Cross multiply
    3,632.60x = 5,445 × 1,438.28
  4. Step 4: Simplify right side
    3,632.60x = 7,831,434.60
  5. Step 5: Solve for x
    x = 7,831,434.60/3,632.60
  6. Step 6: Final answer
    x = 2,155.88

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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.