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Finding the Fourth Proportional to 7,290.98, 10,930.56 and 2,904.20

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Solution

The fourth proportional to 7,290.98, 10,930.56 and 2,904.20 is: 4,353.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,290.98 : 10,930.56 = 2,904.20 : x
  2. Step 2: Convert to fraction form
    7,290.98/10,930.56 = 2,904.20/x
  3. Step 3: Cross multiply
    7,290.98x = 10,930.56 × 2,904.20
  4. Step 4: Simplify right side
    7,290.98x = 31,744,532.35
  5. Step 5: Solve for x
    x = 31,744,532.35/7,290.98
  6. Step 6: Final answer
    x = 4,353.95

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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.