Home / 6,986.88-10,428.80-6,402.33

Finding the Fourth Proportional to 6,986.88, 10,428.80 and 6,402.33

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Solution

The fourth proportional to 6,986.88, 10,428.80 and 6,402.33 is: 9,556.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,986.88 : 10,428.80 = 6,402.33 : x
  2. Step 2: Convert to fraction form
    6,986.88/10,428.80 = 6,402.33/x
  3. Step 3: Cross multiply
    6,986.88x = 10,428.80 × 6,402.33
  4. Step 4: Simplify right side
    6,986.88x = 66,768,587.09
  5. Step 5: Solve for x
    x = 66,768,587.09/6,986.88
  6. Step 6: Final answer
    x = 9,556.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.