Home / 7,663.21-10,576.20-4,678.40

Finding the Fourth Proportional to 7,663.21, 10,576.20 and 4,678.40

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Solution

The fourth proportional to 7,663.21, 10,576.20 and 4,678.40 is: 6,456.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,663.21 : 10,576.20 = 4,678.40 : x
  2. Step 2: Convert to fraction form
    7,663.21/10,576.20 = 4,678.40/x
  3. Step 3: Cross multiply
    7,663.21x = 10,576.20 × 4,678.40
  4. Step 4: Simplify right side
    7,663.21x = 49,479,694.08
  5. Step 5: Solve for x
    x = 49,479,694.08/7,663.21
  6. Step 6: Final answer
    x = 6,456.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.