Home / 3,438.92-5,158.40-1,130.40

Finding the Fourth Proportional to 3,438.92, 5,158.40 and 1,130.40

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Solution

The fourth proportional to 3,438.92, 5,158.40 and 1,130.40 is: 1,695.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.92 : 5,158.40 = 1,130.40 : x
  2. Step 2: Convert to fraction form
    3,438.92/5,158.40 = 1,130.40/x
  3. Step 3: Cross multiply
    3,438.92x = 5,158.40 × 1,130.40
  4. Step 4: Simplify right side
    3,438.92x = 5,831,055.36
  5. Step 5: Solve for x
    x = 5,831,055.36/3,438.92
  6. Step 6: Final answer
    x = 1,695.61

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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.