Home / 9,420.20-12,998.98-5,440.77

Finding the Fourth Proportional to 9,420.20, 12,998.98 and 5,440.77

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Solution

The fourth proportional to 9,420.20, 12,998.98 and 5,440.77 is: 7,507.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.20 : 12,998.98 = 5,440.77 : x
  2. Step 2: Convert to fraction form
    9,420.20/12,998.98 = 5,440.77/x
  3. Step 3: Cross multiply
    9,420.20x = 12,998.98 × 5,440.77
  4. Step 4: Simplify right side
    9,420.20x = 70,724,467.22
  5. Step 5: Solve for x
    x = 70,724,467.22/9,420.20
  6. Step 6: Final answer
    x = 7,507.75

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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.