Home / 7,487.80-11,231.70-4,523.20

Finding the Fourth Proportional to 7,487.80, 11,231.70 and 4,523.20

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Solution

The fourth proportional to 7,487.80, 11,231.70 and 4,523.20 is: 6,784.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,487.80 : 11,231.70 = 4,523.20 : x
  2. Step 2: Convert to fraction form
    7,487.80/11,231.70 = 4,523.20/x
  3. Step 3: Cross multiply
    7,487.80x = 11,231.70 × 4,523.20
  4. Step 4: Simplify right side
    7,487.80x = 50,803,225.44
  5. Step 5: Solve for x
    x = 50,803,225.44/7,487.80
  6. Step 6: Final answer
    x = 6,784.80

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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.