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Finding the Fourth Proportional to 7,900.56, 10,902.80 and 4,363.80

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Solution

The fourth proportional to 7,900.56, 10,902.80 and 4,363.80 is: 6,022.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,900.56 : 10,902.80 = 4,363.80 : x
  2. Step 2: Convert to fraction form
    7,900.56/10,902.80 = 4,363.80/x
  3. Step 3: Cross multiply
    7,900.56x = 10,902.80 × 4,363.80
  4. Step 4: Simplify right side
    7,900.56x = 47,577,638.64
  5. Step 5: Solve for x
    x = 47,577,638.64/7,900.56
  6. Step 6: Final answer
    x = 6,022.06

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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.