Home / 7,109.20-9,814.70-4,930.30

Finding the Fourth Proportional to 7,109.20, 9,814.70 and 4,930.30

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Solution

The fourth proportional to 7,109.20, 9,814.70 and 4,930.30 is: 6,806.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.20 : 9,814.70 = 4,930.30 : x
  2. Step 2: Convert to fraction form
    7,109.20/9,814.70 = 4,930.30/x
  3. Step 3: Cross multiply
    7,109.20x = 9,814.70 × 4,930.30
  4. Step 4: Simplify right side
    7,109.20x = 48,389,415.41
  5. Step 5: Solve for x
    x = 48,389,415.41/7,109.20
  6. Step 6: Final answer
    x = 6,806.59

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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.