Home / 8,178.06-11,287.20-4,820.68

Finding the Fourth Proportional to 8,178.06, 11,287.20 and 4,820.68

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Solution

The fourth proportional to 8,178.06, 11,287.20 and 4,820.68 is: 6,653.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.06 : 11,287.20 = 4,820.68 : x
  2. Step 2: Convert to fraction form
    8,178.06/11,287.20 = 4,820.68/x
  3. Step 3: Cross multiply
    8,178.06x = 11,287.20 × 4,820.68
  4. Step 4: Simplify right side
    8,178.06x = 54,411,979.30
  5. Step 5: Solve for x
    x = 54,411,979.30/8,178.06
  6. Step 6: Final answer
    x = 6,653.41

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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.