Home / 6,903.60-10,355.40-4,138.80

Finding the Fourth Proportional to 6,903.60, 10,355.40 and 4,138.80

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Solution

The fourth proportional to 6,903.60, 10,355.40 and 4,138.80 is: 6,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,903.60 : 10,355.40 = 4,138.80 : x
  2. Step 2: Convert to fraction form
    6,903.60/10,355.40 = 4,138.80/x
  3. Step 3: Cross multiply
    6,903.60x = 10,355.40 × 4,138.80
  4. Step 4: Simplify right side
    6,903.60x = 42,858,929.52
  5. Step 5: Solve for x
    x = 42,858,929.52/6,903.60
  6. Step 6: Final answer
    x = 6,208.20

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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.