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Finding the Fourth Proportional to 7,847.55, 10,828.08 and 4,661.82

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Solution

The fourth proportional to 7,847.55, 10,828.08 and 4,661.82 is: 6,432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,847.55 : 10,828.08 = 4,661.82 : x
  2. Step 2: Convert to fraction form
    7,847.55/10,828.08 = 4,661.82/x
  3. Step 3: Cross multiply
    7,847.55x = 10,828.08 × 4,661.82
  4. Step 4: Simplify right side
    7,847.55x = 50,478,559.91
  5. Step 5: Solve for x
    x = 50,478,559.91/7,847.55
  6. Step 6: Final answer
    x = 6,432.40

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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.