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Finding the Fourth Proportional to 4,956.40, 7,415.40 and 3,228.40

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Solution

The fourth proportional to 4,956.40, 7,415.40 and 3,228.40 is: 4,830.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,956.40 : 7,415.40 = 3,228.40 : x
  2. Step 2: Convert to fraction form
    4,956.40/7,415.40 = 3,228.40/x
  3. Step 3: Cross multiply
    4,956.40x = 7,415.40 × 3,228.40
  4. Step 4: Simplify right side
    4,956.40x = 23,939,877.36
  5. Step 5: Solve for x
    x = 23,939,877.36/4,956.40
  6. Step 6: Final answer
    x = 4,830.09

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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.