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Finding the Fourth Proportional to 6,432.16, 8,878.46 and 4,945.00

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Solution

The fourth proportional to 6,432.16, 8,878.46 and 4,945.00 is: 6,825.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,432.16 : 8,878.46 = 4,945.00 : x
  2. Step 2: Convert to fraction form
    6,432.16/8,878.46 = 4,945.00/x
  3. Step 3: Cross multiply
    6,432.16x = 8,878.46 × 4,945.00
  4. Step 4: Simplify right side
    6,432.16x = 43,903,915.58
  5. Step 5: Solve for x
    x = 43,903,915.58/6,432.16
  6. Step 6: Final answer
    x = 6,825.69

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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.