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Finding the Fourth Proportional to 6,445.24, 8,894.34 and 3,928.24

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Solution

The fourth proportional to 6,445.24, 8,894.34 and 3,928.24 is: 5,420.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,445.24 : 8,894.34 = 3,928.24 : x
  2. Step 2: Convert to fraction form
    6,445.24/8,894.34 = 3,928.24/x
  3. Step 3: Cross multiply
    6,445.24x = 8,894.34 × 3,928.24
  4. Step 4: Simplify right side
    6,445.24x = 34,939,102.16
  5. Step 5: Solve for x
    x = 34,939,102.16/6,445.24
  6. Step 6: Final answer
    x = 5,420.92

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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.