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Finding the Fourth Proportional to 8,650.94, 12,977.32 and 3,970.15

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Solution

The fourth proportional to 8,650.94, 12,977.32 and 3,970.15 is: 5,955.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,650.94 : 12,977.32 = 3,970.15 : x
  2. Step 2: Convert to fraction form
    8,650.94/12,977.32 = 3,970.15/x
  3. Step 3: Cross multiply
    8,650.94x = 12,977.32 × 3,970.15
  4. Step 4: Simplify right side
    8,650.94x = 51,521,907.00
  5. Step 5: Solve for x
    x = 51,521,907.00/8,650.94
  6. Step 6: Final answer
    x = 5,955.64

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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.