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Finding the Fourth Proportional to 6,435.96, 8,885.90 and 4,941.20

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Solution

The fourth proportional to 6,435.96, 8,885.90 and 4,941.20 is: 6,822.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,435.96 : 8,885.90 = 4,941.20 : x
  2. Step 2: Convert to fraction form
    6,435.96/8,885.90 = 4,941.20/x
  3. Step 3: Cross multiply
    6,435.96x = 8,885.90 × 4,941.20
  4. Step 4: Simplify right side
    6,435.96x = 43,907,043.65
  5. Step 5: Solve for x
    x = 43,907,043.65/6,435.96
  6. Step 6: Final answer
    x = 6,822.15

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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.