Home / 8,456.19-11,666.90-4,918.71

Finding the Fourth Proportional to 8,456.19, 11,666.90 and 4,918.71

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Solution

The fourth proportional to 8,456.19, 11,666.90 and 4,918.71 is: 6,786.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,456.19 : 11,666.90 = 4,918.71 : x
  2. Step 2: Convert to fraction form
    8,456.19/11,666.90 = 4,918.71/x
  3. Step 3: Cross multiply
    8,456.19x = 11,666.90 × 4,918.71
  4. Step 4: Simplify right side
    8,456.19x = 57,386,097.70
  5. Step 5: Solve for x
    x = 57,386,097.70/8,456.19
  6. Step 6: Final answer
    x = 6,786.28

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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.