Home / 6,918.48-10,377.72-1,988.10

Finding the Fourth Proportional to 6,918.48, 10,377.72 and 1,988.10

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Solution

The fourth proportional to 6,918.48, 10,377.72 and 1,988.10 is: 2,982.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918.48 : 10,377.72 = 1,988.10 : x
  2. Step 2: Convert to fraction form
    6,918.48/10,377.72 = 1,988.10/x
  3. Step 3: Cross multiply
    6,918.48x = 10,377.72 × 1,988.10
  4. Step 4: Simplify right side
    6,918.48x = 20,631,945.13
  5. Step 5: Solve for x
    x = 20,631,945.13/6,918.48
  6. Step 6: Final answer
    x = 2,982.15

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Similar ratio
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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.