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Finding the Fourth Proportional to 7,190.88, 10,782.06 and 2,803.22

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Solution

The fourth proportional to 7,190.88, 10,782.06 and 2,803.22 is: 4,203.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.88 : 10,782.06 = 2,803.22 : x
  2. Step 2: Convert to fraction form
    7,190.88/10,782.06 = 2,803.22/x
  3. Step 3: Cross multiply
    7,190.88x = 10,782.06 × 2,803.22
  4. Step 4: Simplify right side
    7,190.88x = 30,224,432.32
  5. Step 5: Solve for x
    x = 30,224,432.32/7,190.88
  6. Step 6: Final answer
    x = 4,203.16

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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.