Home / 7,278.60-10,919.70-3,116.64

Finding the Fourth Proportional to 7,278.60, 10,919.70 and 3,116.64

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Solution

The fourth proportional to 7,278.60, 10,919.70 and 3,116.64 is: 4,675.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.60 : 10,919.70 = 3,116.64 : x
  2. Step 2: Convert to fraction form
    7,278.60/10,919.70 = 3,116.64/x
  3. Step 3: Cross multiply
    7,278.60x = 10,919.70 × 3,116.64
  4. Step 4: Simplify right side
    7,278.60x = 34,032,773.81
  5. Step 5: Solve for x
    x = 34,032,773.81/7,278.60
  6. Step 6: Final answer
    x = 4,675.73

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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.