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Finding the Fourth Proportional to 6,580.91, 9,878.20 and 3,812.99

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Solution

The fourth proportional to 6,580.91, 9,878.20 and 3,812.99 is: 5,723.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,580.91 : 9,878.20 = 3,812.99 : x
  2. Step 2: Convert to fraction form
    6,580.91/9,878.20 = 3,812.99/x
  3. Step 3: Cross multiply
    6,580.91x = 9,878.20 × 3,812.99
  4. Step 4: Simplify right side
    6,580.91x = 37,665,477.82
  5. Step 5: Solve for x
    x = 37,665,477.82/6,580.91
  6. Step 6: Final answer
    x = 5,723.45

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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.