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Finding the Fourth Proportional to 6,417.78, 8,861.54 and 4,923.32

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Solution

The fourth proportional to 6,417.78, 8,861.54 and 4,923.32 is: 6,798.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,417.78 : 8,861.54 = 4,923.32 : x
  2. Step 2: Convert to fraction form
    6,417.78/8,861.54 = 4,923.32/x
  3. Step 3: Cross multiply
    6,417.78x = 8,861.54 × 4,923.32
  4. Step 4: Simplify right side
    6,417.78x = 43,628,197.11
  5. Step 5: Solve for x
    x = 43,628,197.11/6,417.78
  6. Step 6: Final answer
    x = 6,798.02

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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.