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Finding the Fourth Proportional to 8,437.77, 12,653.01 and 3,240

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Solution

The fourth proportional to 8,437.77, 12,653.01 and 3,240 is: 4,858.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,437.77 : 12,653.01 = 3,240 : x
  2. Step 2: Convert to fraction form
    8,437.77/12,653.01 = 3,240/x
  3. Step 3: Cross multiply
    8,437.77x = 12,653.01 × 3,240
  4. Step 4: Simplify right side
    8,437.77x = 40,995,752.40
  5. Step 5: Solve for x
    x = 40,995,752.40/8,437.77
  6. Step 6: Final answer
    x = 4,858.60

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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.