Home / 8,968.47-12,376.31-4,989.54

Finding the Fourth Proportional to 8,968.47, 12,376.31 and 4,989.54

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Solution

The fourth proportional to 8,968.47, 12,376.31 and 4,989.54 is: 6,885.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.47 : 12,376.31 = 4,989.54 : x
  2. Step 2: Convert to fraction form
    8,968.47/12,376.31 = 4,989.54/x
  3. Step 3: Cross multiply
    8,968.47x = 12,376.31 × 4,989.54
  4. Step 4: Simplify right side
    8,968.47x = 61,752,093.80
  5. Step 5: Solve for x
    x = 61,752,093.80/8,968.47
  6. Step 6: Final answer
    x = 6,885.47

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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.