Home / 5,420.08-8,128.46-1,956.52

Finding the Fourth Proportional to 5,420.08, 8,128.46 and 1,956.52

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Solution

The fourth proportional to 5,420.08, 8,128.46 and 1,956.52 is: 2,934.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.08 : 8,128.46 = 1,956.52 : x
  2. Step 2: Convert to fraction form
    5,420.08/8,128.46 = 1,956.52/x
  3. Step 3: Cross multiply
    5,420.08x = 8,128.46 × 1,956.52
  4. Step 4: Simplify right side
    5,420.08x = 15,903,494.56
  5. Step 5: Solve for x
    x = 15,903,494.56/5,420.08
  6. Step 6: Final answer
    x = 2,934.18

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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.