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Finding the Fourth Proportional to 7,670.54, 11,510.18 and 2,989.94

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Solution

The fourth proportional to 7,670.54, 11,510.18 and 2,989.94 is: 4,486.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,670.54 : 11,510.18 = 2,989.94 : x
  2. Step 2: Convert to fraction form
    7,670.54/11,510.18 = 2,989.94/x
  3. Step 3: Cross multiply
    7,670.54x = 11,510.18 × 2,989.94
  4. Step 4: Simplify right side
    7,670.54x = 34,414,747.59
  5. Step 5: Solve for x
    x = 34,414,747.59/7,670.54
  6. Step 6: Final answer
    x = 4,486.61

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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.