Home / 6,918.85-10,376.44-1,988.69

Finding the Fourth Proportional to 6,918.85, 10,376.44 and 1,988.69

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Solution

The fourth proportional to 6,918.85, 10,376.44 and 1,988.69 is: 2,982.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918.85 : 10,376.44 = 1,988.69 : x
  2. Step 2: Convert to fraction form
    6,918.85/10,376.44 = 1,988.69/x
  3. Step 3: Cross multiply
    6,918.85x = 10,376.44 × 1,988.69
  4. Step 4: Simplify right side
    6,918.85x = 20,635,465.61
  5. Step 5: Solve for x
    x = 20,635,465.61/6,918.85
  6. Step 6: Final answer
    x = 2,982.50

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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.