Home / 7,145.28-10,654.56-6,668.64

Finding the Fourth Proportional to 7,145.28, 10,654.56 and 6,668.64

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Solution

The fourth proportional to 7,145.28, 10,654.56 and 6,668.64 is: 9,943.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.28 : 10,654.56 = 6,668.64 : x
  2. Step 2: Convert to fraction form
    7,145.28/10,654.56 = 6,668.64/x
  3. Step 3: Cross multiply
    7,145.28x = 10,654.56 × 6,668.64
  4. Step 4: Simplify right side
    7,145.28x = 71,051,425.00
  5. Step 5: Solve for x
    x = 71,051,425.00/7,145.28
  6. Step 6: Final answer
    x = 9,943.83

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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.