Home / 8,960.54-12,378.60-6,615.62

Finding the Fourth Proportional to 8,960.54, 12,378.60 and 6,615.62

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Solution

The fourth proportional to 8,960.54, 12,378.60 and 6,615.62 is: 9,139.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960.54 : 12,378.60 = 6,615.62 : x
  2. Step 2: Convert to fraction form
    8,960.54/12,378.60 = 6,615.62/x
  3. Step 3: Cross multiply
    8,960.54x = 12,378.60 × 6,615.62
  4. Step 4: Simplify right side
    8,960.54x = 81,892,113.73
  5. Step 5: Solve for x
    x = 81,892,113.73/8,960.54
  6. Step 6: Final answer
    x = 9,139.19

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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.