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Finding the Fourth Proportional to 7,483.80, 11,225.70 and 7,119.30

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Solution

The fourth proportional to 7,483.80, 11,225.70 and 7,119.30 is: 10,678.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,483.80 : 11,225.70 = 7,119.30 : x
  2. Step 2: Convert to fraction form
    7,483.80/11,225.70 = 7,119.30/x
  3. Step 3: Cross multiply
    7,483.80x = 11,225.70 × 7,119.30
  4. Step 4: Simplify right side
    7,483.80x = 79,919,126.01
  5. Step 5: Solve for x
    x = 79,919,126.01/7,483.80
  6. Step 6: Final answer
    x = 10,678.95

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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.