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Finding the Fourth Proportional to 7,012.92, 10,519.92 and 1,818.84

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Solution

The fourth proportional to 7,012.92, 10,519.92 and 1,818.84 is: 2,728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,012.92 : 10,519.92 = 1,818.84 : x
  2. Step 2: Convert to fraction form
    7,012.92/10,519.92 = 1,818.84/x
  3. Step 3: Cross multiply
    7,012.92x = 10,519.92 × 1,818.84
  4. Step 4: Simplify right side
    7,012.92x = 19,134,051.29
  5. Step 5: Solve for x
    x = 19,134,051.29/7,012.92
  6. Step 6: Final answer
    x = 2,728.40

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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.