Home / 7,119.02-10,678.70-2,188.70

Finding the Fourth Proportional to 7,119.02, 10,678.70 and 2,188.70

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Solution

The fourth proportional to 7,119.02, 10,678.70 and 2,188.70 is: 3,283.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.02 : 10,678.70 = 2,188.70 : x
  2. Step 2: Convert to fraction form
    7,119.02/10,678.70 = 2,188.70/x
  3. Step 3: Cross multiply
    7,119.02x = 10,678.70 × 2,188.70
  4. Step 4: Simplify right side
    7,119.02x = 23,372,486.44
  5. Step 5: Solve for x
    x = 23,372,486.44/7,119.02
  6. Step 6: Final answer
    x = 3,283.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.