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Finding the Fourth Proportional to 6,889.50, 9,509.66 and 4,056.65

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Solution

The fourth proportional to 6,889.50, 9,509.66 and 4,056.65 is: 5,599.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,889.50 : 9,509.66 = 4,056.65 : x
  2. Step 2: Convert to fraction form
    6,889.50/9,509.66 = 4,056.65/x
  3. Step 3: Cross multiply
    6,889.50x = 9,509.66 × 4,056.65
  4. Step 4: Simplify right side
    6,889.50x = 38,577,294.41
  5. Step 5: Solve for x
    x = 38,577,294.41/6,889.50
  6. Step 6: Final answer
    x = 5,599.43

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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.