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Finding the Fourth Proportional to 7,213.63, 9,953.09 and 4,974.79

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Solution

The fourth proportional to 7,213.63, 9,953.09 and 4,974.79 is: 6,864.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,213.63 : 9,953.09 = 4,974.79 : x
  2. Step 2: Convert to fraction form
    7,213.63/9,953.09 = 4,974.79/x
  3. Step 3: Cross multiply
    7,213.63x = 9,953.09 × 4,974.79
  4. Step 4: Simplify right side
    7,213.63x = 49,514,501.50
  5. Step 5: Solve for x
    x = 49,514,501.50/7,213.63
  6. Step 6: Final answer
    x = 6,864.02

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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.