Home / 5,529.28-7,631.40-3,172.20

Finding the Fourth Proportional to 5,529.28, 7,631.40 and 3,172.20

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Solution

The fourth proportional to 5,529.28, 7,631.40 and 3,172.20 is: 4,378.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,529.28 : 7,631.40 = 3,172.20 : x
  2. Step 2: Convert to fraction form
    5,529.28/7,631.40 = 3,172.20/x
  3. Step 3: Cross multiply
    5,529.28x = 7,631.40 × 3,172.20
  4. Step 4: Simplify right side
    5,529.28x = 24,208,327.08
  5. Step 5: Solve for x
    x = 24,208,327.08/5,529.28
  6. Step 6: Final answer
    x = 4,378.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.