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Finding the Fourth Proportional to 7,020.80, 10,528.90 and 2,339.80

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Solution

The fourth proportional to 7,020.80, 10,528.90 and 2,339.80 is: 3,508.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.80 : 10,528.90 = 2,339.80 : x
  2. Step 2: Convert to fraction form
    7,020.80/10,528.90 = 2,339.80/x
  3. Step 3: Cross multiply
    7,020.80x = 10,528.90 × 2,339.80
  4. Step 4: Simplify right side
    7,020.80x = 24,635,520.22
  5. Step 5: Solve for x
    x = 24,635,520.22/7,020.80
  6. Step 6: Final answer
    x = 3,508.93

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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.