Home / 8,455.43-11,668.39-4,678.31

Finding the Fourth Proportional to 8,455.43, 11,668.39 and 4,678.31

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Solution

The fourth proportional to 8,455.43, 11,668.39 and 4,678.31 is: 6,456.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.43 : 11,668.39 = 4,678.31 : x
  2. Step 2: Convert to fraction form
    8,455.43/11,668.39 = 4,678.31/x
  3. Step 3: Cross multiply
    8,455.43x = 11,668.39 × 4,678.31
  4. Step 4: Simplify right side
    8,455.43x = 54,588,363.10
  5. Step 5: Solve for x
    x = 54,588,363.10/8,455.43
  6. Step 6: Final answer
    x = 6,456.01

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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.