Home / 5,425.20-8,148.72-5,272.08

Finding the Fourth Proportional to 5,425.20, 8,148.72 and 5,272.08

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Solution

The fourth proportional to 5,425.20, 8,148.72 and 5,272.08 is: 7,918.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.20 : 8,148.72 = 5,272.08 : x
  2. Step 2: Convert to fraction form
    5,425.20/8,148.72 = 5,272.08/x
  3. Step 3: Cross multiply
    5,425.20x = 8,148.72 × 5,272.08
  4. Step 4: Simplify right side
    5,425.20x = 42,960,703.74
  5. Step 5: Solve for x
    x = 42,960,703.74/5,425.20
  6. Step 6: Final answer
    x = 7,918.73

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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.