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Finding the Fourth Proportional to 7,090.80, 10,633.80 and 2,647.55

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Solution

The fourth proportional to 7,090.80, 10,633.80 and 2,647.55 is: 3,970.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.80 : 10,633.80 = 2,647.55 : x
  2. Step 2: Convert to fraction form
    7,090.80/10,633.80 = 2,647.55/x
  3. Step 3: Cross multiply
    7,090.80x = 10,633.80 × 2,647.55
  4. Step 4: Simplify right side
    7,090.80x = 28,153,464.02
  5. Step 5: Solve for x
    x = 28,153,464.02/7,090.80
  6. Step 6: Final answer
    x = 3,970.42

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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.