Home / 8,942.80-12,341.38-5,403.96

Finding the Fourth Proportional to 8,942.80, 12,341.38 and 5,403.96

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Solution

The fourth proportional to 8,942.80, 12,341.38 and 5,403.96 is: 7,457.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,942.80 : 12,341.38 = 5,403.96 : x
  2. Step 2: Convert to fraction form
    8,942.80/12,341.38 = 5,403.96/x
  3. Step 3: Cross multiply
    8,942.80x = 12,341.38 × 5,403.96
  4. Step 4: Simplify right side
    8,942.80x = 66,692,235.14
  5. Step 5: Solve for x
    x = 66,692,235.14/8,942.80
  6. Step 6: Final answer
    x = 7,457.65

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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.