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Finding the Fourth Proportional to 8,947.46, 13,426.02 and 5,256.90

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Solution

The fourth proportional to 8,947.46, 13,426.02 and 5,256.90 is: 7,888.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,947.46 : 13,426.02 = 5,256.90 : x
  2. Step 2: Convert to fraction form
    8,947.46/13,426.02 = 5,256.90/x
  3. Step 3: Cross multiply
    8,947.46x = 13,426.02 × 5,256.90
  4. Step 4: Simplify right side
    8,947.46x = 70,579,244.54
  5. Step 5: Solve for x
    x = 70,579,244.54/8,947.46
  6. Step 6: Final answer
    x = 7,888.19

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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.