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Finding the Fourth Proportional to 6,411.56, 8,851.95 and 4,916.60

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Solution

The fourth proportional to 6,411.56, 8,851.95 and 4,916.60 is: 6,787.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,411.56 : 8,851.95 = 4,916.60 : x
  2. Step 2: Convert to fraction form
    6,411.56/8,851.95 = 4,916.60/x
  3. Step 3: Cross multiply
    6,411.56x = 8,851.95 × 4,916.60
  4. Step 4: Simplify right side
    6,411.56x = 43,521,497.37
  5. Step 5: Solve for x
    x = 43,521,497.37/6,411.56
  6. Step 6: Final answer
    x = 6,787.97

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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.