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Finding the Fourth Proportional to 6,280.74, 8,647.56 and 4,783.86

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Solution

The fourth proportional to 6,280.74, 8,647.56 and 4,783.86 is: 6,586.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,280.74 : 8,647.56 = 4,783.86 : x
  2. Step 2: Convert to fraction form
    6,280.74/8,647.56 = 4,783.86/x
  3. Step 3: Cross multiply
    6,280.74x = 8,647.56 × 4,783.86
  4. Step 4: Simplify right side
    6,280.74x = 41,368,716.38
  5. Step 5: Solve for x
    x = 41,368,716.38/6,280.74
  6. Step 6: Final answer
    x = 6,586.60

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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.