Home / 7,485.28-11,219.94-5,630.90

Finding the Fourth Proportional to 7,485.28, 11,219.94 and 5,630.90

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Solution

The fourth proportional to 7,485.28, 11,219.94 and 5,630.90 is: 8,440.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.28 : 11,219.94 = 5,630.90 : x
  2. Step 2: Convert to fraction form
    7,485.28/11,219.94 = 5,630.90/x
  3. Step 3: Cross multiply
    7,485.28x = 11,219.94 × 5,630.90
  4. Step 4: Simplify right side
    7,485.28x = 63,178,304.05
  5. Step 5: Solve for x
    x = 63,178,304.05/7,485.28
  6. Step 6: Final answer
    x = 8,440.34

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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.