Home / 7,114.20-10,670.10-1,918.86

Finding the Fourth Proportional to 7,114.20, 10,670.10 and 1,918.86

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Solution

The fourth proportional to 7,114.20, 10,670.10 and 1,918.86 is: 2,877.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,114.20 : 10,670.10 = 1,918.86 : x
  2. Step 2: Convert to fraction form
    7,114.20/10,670.10 = 1,918.86/x
  3. Step 3: Cross multiply
    7,114.20x = 10,670.10 × 1,918.86
  4. Step 4: Simplify right side
    7,114.20x = 20,474,428.09
  5. Step 5: Solve for x
    x = 20,474,428.09/7,114.20
  6. Step 6: Final answer
    x = 2,877.97

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1.5x scale

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.