Home / 8,015.60-11,056.61-5,178.37

Finding the Fourth Proportional to 8,015.60, 11,056.61 and 5,178.37

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Solution

The fourth proportional to 8,015.60, 11,056.61 and 5,178.37 is: 7,142.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,015.60 : 11,056.61 = 5,178.37 : x
  2. Step 2: Convert to fraction form
    8,015.60/11,056.61 = 5,178.37/x
  3. Step 3: Cross multiply
    8,015.60x = 11,056.61 × 5,178.37
  4. Step 4: Simplify right side
    8,015.60x = 57,255,202.83
  5. Step 5: Solve for x
    x = 57,255,202.83/8,015.60
  6. Step 6: Final answer
    x = 7,142.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.