Home / 9,021.78-13,535.46-3,178.98

Finding the Fourth Proportional to 9,021.78, 13,535.46 and 3,178.98

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Solution

The fourth proportional to 9,021.78, 13,535.46 and 3,178.98 is: 4,769.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,021.78 : 13,535.46 = 3,178.98 : x
  2. Step 2: Convert to fraction form
    9,021.78/13,535.46 = 3,178.98/x
  3. Step 3: Cross multiply
    9,021.78x = 13,535.46 × 3,178.98
  4. Step 4: Simplify right side
    9,021.78x = 43,028,956.63
  5. Step 5: Solve for x
    x = 43,028,956.63/9,021.78
  6. Step 6: Final answer
    x = 4,769.45

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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.