Home / 6,918.56-10,377.56-1,988.18

Finding the Fourth Proportional to 6,918.56, 10,377.56 and 1,988.18

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Solution

The fourth proportional to 6,918.56, 10,377.56 and 1,988.18 is: 2,982.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918.56 : 10,377.56 = 1,988.18 : x
  2. Step 2: Convert to fraction form
    6,918.56/10,377.56 = 1,988.18/x
  3. Step 3: Cross multiply
    6,918.56x = 10,377.56 × 1,988.18
  4. Step 4: Simplify right side
    6,918.56x = 20,632,410.32
  5. Step 5: Solve for x
    x = 20,632,410.32/6,918.56
  6. Step 6: Final answer
    x = 2,982.18

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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.