Home / 5,106.60-7,659.90-3,138.30

Finding the Fourth Proportional to 5,106.60, 7,659.90 and 3,138.30

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Solution

The fourth proportional to 5,106.60, 7,659.90 and 3,138.30 is: 4,707.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,106.60 : 7,659.90 = 3,138.30 : x
  2. Step 2: Convert to fraction form
    5,106.60/7,659.90 = 3,138.30/x
  3. Step 3: Cross multiply
    5,106.60x = 7,659.90 × 3,138.30
  4. Step 4: Simplify right side
    5,106.60x = 24,039,064.17
  5. Step 5: Solve for x
    x = 24,039,064.17/5,106.60
  6. Step 6: Final answer
    x = 4,707.45

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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.