Home / 8,956.40-12,359.44-5,178.96

Finding the Fourth Proportional to 8,956.40, 12,359.44 and 5,178.96

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Solution

The fourth proportional to 8,956.40, 12,359.44 and 5,178.96 is: 7,146.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,956.40 : 12,359.44 = 5,178.96 : x
  2. Step 2: Convert to fraction form
    8,956.40/12,359.44 = 5,178.96/x
  3. Step 3: Cross multiply
    8,956.40x = 12,359.44 × 5,178.96
  4. Step 4: Simplify right side
    8,956.40x = 64,009,045.38
  5. Step 5: Solve for x
    x = 64,009,045.38/8,956.40
  6. Step 6: Final answer
    x = 7,146.74

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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.