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Finding the Fourth Proportional to 6,443.56, 8,888.94 and 4,056.40

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Solution

The fourth proportional to 6,443.56, 8,888.94 and 4,056.40 is: 5,595.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,443.56 : 8,888.94 = 4,056.40 : x
  2. Step 2: Convert to fraction form
    6,443.56/8,888.94 = 4,056.40/x
  3. Step 3: Cross multiply
    6,443.56x = 8,888.94 × 4,056.40
  4. Step 4: Simplify right side
    6,443.56x = 36,057,096.22
  5. Step 5: Solve for x
    x = 36,057,096.22/6,443.56
  6. Step 6: Final answer
    x = 5,595.83

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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.