Home / 7,727.12-10,663.43-4,190.34

Finding the Fourth Proportional to 7,727.12, 10,663.43 and 4,190.34

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Solution

The fourth proportional to 7,727.12, 10,663.43 and 4,190.34 is: 5,782.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,727.12 : 10,663.43 = 4,190.34 : x
  2. Step 2: Convert to fraction form
    7,727.12/10,663.43 = 4,190.34/x
  3. Step 3: Cross multiply
    7,727.12x = 10,663.43 × 4,190.34
  4. Step 4: Simplify right side
    7,727.12x = 44,683,376.31
  5. Step 5: Solve for x
    x = 44,683,376.31/7,727.12
  6. Step 6: Final answer
    x = 5,782.67

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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.