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Finding the Fourth Proportional to 6,280.65, 8,671.05 and 3,925.98

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Solution

The fourth proportional to 6,280.65, 8,671.05 and 3,925.98 is: 5,420.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,280.65 : 8,671.05 = 3,925.98 : x
  2. Step 2: Convert to fraction form
    6,280.65/8,671.05 = 3,925.98/x
  3. Step 3: Cross multiply
    6,280.65x = 8,671.05 × 3,925.98
  4. Step 4: Simplify right side
    6,280.65x = 34,042,368.88
  5. Step 5: Solve for x
    x = 34,042,368.88/6,280.65
  6. Step 6: Final answer
    x = 5,420.20

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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.