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Finding the Fourth Proportional to 8,655.93, 12,983.52 and 2,415.90

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Solution

The fourth proportional to 8,655.93, 12,983.52 and 2,415.90 is: 3,623.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.93 : 12,983.52 = 2,415.90 : x
  2. Step 2: Convert to fraction form
    8,655.93/12,983.52 = 2,415.90/x
  3. Step 3: Cross multiply
    8,655.93x = 12,983.52 × 2,415.90
  4. Step 4: Simplify right side
    8,655.93x = 31,366,885.97
  5. Step 5: Solve for x
    x = 31,366,885.97/8,655.93
  6. Step 6: Final answer
    x = 3,623.75

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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.