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Finding the Fourth Proportional to 6,912.03, 10,366.51 and 1,980.57

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Solution

The fourth proportional to 6,912.03, 10,366.51 and 1,980.57 is: 2,970.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.03 : 10,366.51 = 1,980.57 : x
  2. Step 2: Convert to fraction form
    6,912.03/10,366.51 = 1,980.57/x
  3. Step 3: Cross multiply
    6,912.03x = 10,366.51 × 1,980.57
  4. Step 4: Simplify right side
    6,912.03x = 20,531,598.71
  5. Step 5: Solve for x
    x = 20,531,598.71/6,912.03
  6. Step 6: Final answer
    x = 2,970.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.