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Finding the Fourth Proportional to 6,459.86, 9,690.81 and 2,762.11

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Solution

The fourth proportional to 6,459.86, 9,690.81 and 2,762.11 is: 4,143.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,459.86 : 9,690.81 = 2,762.11 : x
  2. Step 2: Convert to fraction form
    6,459.86/9,690.81 = 2,762.11/x
  3. Step 3: Cross multiply
    6,459.86x = 9,690.81 × 2,762.11
  4. Step 4: Simplify right side
    6,459.86x = 26,767,069.40
  5. Step 5: Solve for x
    x = 26,767,069.40/6,459.86
  6. Step 6: Final answer
    x = 4,143.60

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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.