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Finding the Fourth Proportional to 7,288.90, 10,930.15 and 2,904.90

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Solution

The fourth proportional to 7,288.90, 10,930.15 and 2,904.90 is: 4,356.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,288.90 : 10,930.15 = 2,904.90 : x
  2. Step 2: Convert to fraction form
    7,288.90/10,930.15 = 2,904.90/x
  3. Step 3: Cross multiply
    7,288.90x = 10,930.15 × 2,904.90
  4. Step 4: Simplify right side
    7,288.90x = 31,750,992.74
  5. Step 5: Solve for x
    x = 31,750,992.74/7,288.90
  6. Step 6: Final answer
    x = 4,356.07

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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.