Home / 5,425.80-8,138.70-5,304.30

Finding the Fourth Proportional to 5,425.80, 8,138.70 and 5,304.30

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Solution

The fourth proportional to 5,425.80, 8,138.70 and 5,304.30 is: 7,956.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.80 : 8,138.70 = 5,304.30 : x
  2. Step 2: Convert to fraction form
    5,425.80/8,138.70 = 5,304.30/x
  3. Step 3: Cross multiply
    5,425.80x = 8,138.70 × 5,304.30
  4. Step 4: Simplify right side
    5,425.80x = 43,170,106.41
  5. Step 5: Solve for x
    x = 43,170,106.41/5,425.80
  6. Step 6: Final answer
    x = 7,956.45

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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.