Home / 8,420.46-11,620.35-5,436.42

Finding the Fourth Proportional to 8,420.46, 11,620.35 and 5,436.42

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Solution

The fourth proportional to 8,420.46, 11,620.35 and 5,436.42 is: 7,502.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.46 : 11,620.35 = 5,436.42 : x
  2. Step 2: Convert to fraction form
    8,420.46/11,620.35 = 5,436.42/x
  3. Step 3: Cross multiply
    8,420.46x = 11,620.35 × 5,436.42
  4. Step 4: Simplify right side
    8,420.46x = 63,173,103.15
  5. Step 5: Solve for x
    x = 63,173,103.15/8,420.46
  6. Step 6: Final answer
    x = 7,502.33

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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.