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Finding the Fourth Proportional to 7,175.28, 10,775.28 and 4,271.84

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Solution

The fourth proportional to 7,175.28, 10,775.28 and 4,271.84 is: 6,415.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,175.28 : 10,775.28 = 4,271.84 : x
  2. Step 2: Convert to fraction form
    7,175.28/10,775.28 = 4,271.84/x
  3. Step 3: Cross multiply
    7,175.28x = 10,775.28 × 4,271.84
  4. Step 4: Simplify right side
    7,175.28x = 46,030,272.12
  5. Step 5: Solve for x
    x = 46,030,272.12/7,175.28
  6. Step 6: Final answer
    x = 6,415.12

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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.