Home / 5,247.09-7,870.66-1,960.15

Finding the Fourth Proportional to 5,247.09, 7,870.66 and 1,960.15

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Solution

The fourth proportional to 5,247.09, 7,870.66 and 1,960.15 is: 2,940.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.09 : 7,870.66 = 1,960.15 : x
  2. Step 2: Convert to fraction form
    5,247.09/7,870.66 = 1,960.15/x
  3. Step 3: Cross multiply
    5,247.09x = 7,870.66 × 1,960.15
  4. Step 4: Simplify right side
    5,247.09x = 15,427,664.40
  5. Step 5: Solve for x
    x = 15,427,664.40/5,247.09
  6. Step 6: Final answer
    x = 2,940.23

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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.