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Finding the Fourth Proportional to 8,168.40, 11,271 and 4,810.56

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Solution

The fourth proportional to 8,168.40, 11,271 and 4,810.56 is: 6,637.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168.40 : 11,271 = 4,810.56 : x
  2. Step 2: Convert to fraction form
    8,168.40/11,271 = 4,810.56/x
  3. Step 3: Cross multiply
    8,168.40x = 11,271 × 4,810.56
  4. Step 4: Simplify right side
    8,168.40x = 54,219,821.76
  5. Step 5: Solve for x
    x = 54,219,821.76/8,168.40
  6. Step 6: Final answer
    x = 6,637.75

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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.