Home / 5,528.90-8,309.64-5,121.56

Finding the Fourth Proportional to 5,528.90, 8,309.64 and 5,121.56

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Solution

The fourth proportional to 5,528.90, 8,309.64 and 5,121.56 is: 7,697.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,528.90 : 8,309.64 = 5,121.56 : x
  2. Step 2: Convert to fraction form
    5,528.90/8,309.64 = 5,121.56/x
  3. Step 3: Cross multiply
    5,528.90x = 8,309.64 × 5,121.56
  4. Step 4: Simplify right side
    5,528.90x = 42,558,319.84
  5. Step 5: Solve for x
    x = 42,558,319.84/5,528.90
  6. Step 6: Final answer
    x = 7,697.43

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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.