Home / 8,456.28-11,668.60-4,678.91

Finding the Fourth Proportional to 8,456.28, 11,668.60 and 4,678.91

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Solution

The fourth proportional to 8,456.28, 11,668.60 and 4,678.91 is: 6,456.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,456.28 : 11,668.60 = 4,678.91 : x
  2. Step 2: Convert to fraction form
    8,456.28/11,668.60 = 4,678.91/x
  3. Step 3: Cross multiply
    8,456.28x = 11,668.60 × 4,678.91
  4. Step 4: Simplify right side
    8,456.28x = 54,596,329.23
  5. Step 5: Solve for x
    x = 54,596,329.23/8,456.28
  6. Step 6: Final answer
    x = 6,456.31

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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.