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Finding the Fourth Proportional to 8,603.15, 12,904.45 and 2,447.15

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Solution

The fourth proportional to 8,603.15, 12,904.45 and 2,447.15 is: 3,670.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.15 : 12,904.45 = 2,447.15 : x
  2. Step 2: Convert to fraction form
    8,603.15/12,904.45 = 2,447.15/x
  3. Step 3: Cross multiply
    8,603.15x = 12,904.45 × 2,447.15
  4. Step 4: Simplify right side
    8,603.15x = 31,579,054.18
  5. Step 5: Solve for x
    x = 31,579,054.18/8,603.15
  6. Step 6: Final answer
    x = 3,670.64

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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.