Home / 6,917.68-10,376.25-1,987.30

Finding the Fourth Proportional to 6,917.68, 10,376.25 and 1,987.30

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Solution

The fourth proportional to 6,917.68, 10,376.25 and 1,987.30 is: 2,980.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,917.68 : 10,376.25 = 1,987.30 : x
  2. Step 2: Convert to fraction form
    6,917.68/10,376.25 = 1,987.30/x
  3. Step 3: Cross multiply
    6,917.68x = 10,376.25 × 1,987.30
  4. Step 4: Simplify right side
    6,917.68x = 20,620,721.63
  5. Step 5: Solve for x
    x = 20,620,721.63/6,917.68
  6. Step 6: Final answer
    x = 2,980.87

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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.