Home / 7,640.07-11,461.83-3,478.96

Finding the Fourth Proportional to 7,640.07, 11,461.83 and 3,478.96

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Solution

The fourth proportional to 7,640.07, 11,461.83 and 3,478.96 is: 5,219.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,640.07 : 11,461.83 = 3,478.96 : x
  2. Step 2: Convert to fraction form
    7,640.07/11,461.83 = 3,478.96/x
  3. Step 3: Cross multiply
    7,640.07x = 11,461.83 × 3,478.96
  4. Step 4: Simplify right side
    7,640.07x = 39,875,249.38
  5. Step 5: Solve for x
    x = 39,875,249.38/7,640.07
  6. Step 6: Final answer
    x = 5,219.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.