Home / 6,984.90-10,477.40-1,790.78

Finding the Fourth Proportional to 6,984.90, 10,477.40 and 1,790.78

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Solution

The fourth proportional to 6,984.90, 10,477.40 and 1,790.78 is: 2,686.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,984.90 : 10,477.40 = 1,790.78 : x
  2. Step 2: Convert to fraction form
    6,984.90/10,477.40 = 1,790.78/x
  3. Step 3: Cross multiply
    6,984.90x = 10,477.40 × 1,790.78
  4. Step 4: Simplify right side
    6,984.90x = 18,762,657.03
  5. Step 5: Solve for x
    x = 18,762,657.03/6,984.90
  6. Step 6: Final answer
    x = 2,686.17

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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.