Home / 3,438.13-5,155.36-1,358.05

Finding the Fourth Proportional to 3,438.13, 5,155.36 and 1,358.05

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Solution

The fourth proportional to 3,438.13, 5,155.36 and 1,358.05 is: 2,036.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.13 : 5,155.36 = 1,358.05 : x
  2. Step 2: Convert to fraction form
    3,438.13/5,155.36 = 1,358.05/x
  3. Step 3: Cross multiply
    3,438.13x = 5,155.36 × 1,358.05
  4. Step 4: Simplify right side
    3,438.13x = 7,001,229.86
  5. Step 5: Solve for x
    x = 7,001,229.86/3,438.13
  6. Step 6: Final answer
    x = 2,036.35

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1.5x scale

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.