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Finding the Fourth Proportional to 6,390.50, 8,822.93 and 4,895.64

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Solution

The fourth proportional to 6,390.50, 8,822.93 and 4,895.64 is: 6,759.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.50 : 8,822.93 = 4,895.64 : x
  2. Step 2: Convert to fraction form
    6,390.50/8,822.93 = 4,895.64/x
  3. Step 3: Cross multiply
    6,390.50x = 8,822.93 × 4,895.64
  4. Step 4: Simplify right side
    6,390.50x = 43,193,864.55
  5. Step 5: Solve for x
    x = 43,193,864.55/6,390.50
  6. Step 6: Final answer
    x = 6,759.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.