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Finding the Fourth Proportional to 7,666.91, 10,585.17 and 5,018.79

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Solution

The fourth proportional to 7,666.91, 10,585.17 and 5,018.79 is: 6,929.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,666.91 : 10,585.17 = 5,018.79 : x
  2. Step 2: Convert to fraction form
    7,666.91/10,585.17 = 5,018.79/x
  3. Step 3: Cross multiply
    7,666.91x = 10,585.17 × 5,018.79
  4. Step 4: Simplify right side
    7,666.91x = 53,124,745.34
  5. Step 5: Solve for x
    x = 53,124,745.34/7,666.91
  6. Step 6: Final answer
    x = 6,929.10

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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.