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Finding the Fourth Proportional to 6,877.63, 10,315.81 and 1,947.16

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Solution

The fourth proportional to 6,877.63, 10,315.81 and 1,947.16 is: 2,920.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,877.63 : 10,315.81 = 1,947.16 : x
  2. Step 2: Convert to fraction form
    6,877.63/10,315.81 = 1,947.16/x
  3. Step 3: Cross multiply
    6,877.63x = 10,315.81 × 1,947.16
  4. Step 4: Simplify right side
    6,877.63x = 20,086,532.60
  5. Step 5: Solve for x
    x = 20,086,532.60/6,877.63
  6. Step 6: Final answer
    x = 2,920.56

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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.