Home / 6,938.35-10,400.69-2,990.51

Finding the Fourth Proportional to 6,938.35, 10,400.69 and 2,990.51

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Solution

The fourth proportional to 6,938.35, 10,400.69 and 2,990.51 is: 4,482.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,938.35 : 10,400.69 = 2,990.51 : x
  2. Step 2: Convert to fraction form
    6,938.35/10,400.69 = 2,990.51/x
  3. Step 3: Cross multiply
    6,938.35x = 10,400.69 × 2,990.51
  4. Step 4: Simplify right side
    6,938.35x = 31,103,400.93
  5. Step 5: Solve for x
    x = 31,103,400.93/6,938.35
  6. Step 6: Final answer
    x = 4,482.83

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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.