Home / 6,986.72-10,521.68-6,301.28

Finding the Fourth Proportional to 6,986.72, 10,521.68 and 6,301.28

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Solution

The fourth proportional to 6,986.72, 10,521.68 and 6,301.28 is: 9,489.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,986.72 : 10,521.68 = 6,301.28 : x
  2. Step 2: Convert to fraction form
    6,986.72/10,521.68 = 6,301.28/x
  3. Step 3: Cross multiply
    6,986.72x = 10,521.68 × 6,301.28
  4. Step 4: Simplify right side
    6,986.72x = 66,300,051.75
  5. Step 5: Solve for x
    x = 66,300,051.75/6,986.72
  6. Step 6: Final answer
    x = 9,489.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.