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Finding the Fourth Proportional to 6,403.79, 8,840.71 and 4,424.98

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Solution

The fourth proportional to 6,403.79, 8,840.71 and 4,424.98 is: 6,108.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,403.79 : 8,840.71 = 4,424.98 : x
  2. Step 2: Convert to fraction form
    6,403.79/8,840.71 = 4,424.98/x
  3. Step 3: Cross multiply
    6,403.79x = 8,840.71 × 4,424.98
  4. Step 4: Simplify right side
    6,403.79x = 39,119,964.94
  5. Step 5: Solve for x
    x = 39,119,964.94/6,403.79
  6. Step 6: Final answer
    x = 6,108.88

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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.