Home / 7,890.42-11,835.72-2,047.08

Finding the Fourth Proportional to 7,890.42, 11,835.72 and 2,047.08

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Solution

The fourth proportional to 7,890.42, 11,835.72 and 2,047.08 is: 3,070.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.42 : 11,835.72 = 2,047.08 : x
  2. Step 2: Convert to fraction form
    7,890.42/11,835.72 = 2,047.08/x
  3. Step 3: Cross multiply
    7,890.42x = 11,835.72 × 2,047.08
  4. Step 4: Simplify right side
    7,890.42x = 24,228,665.70
  5. Step 5: Solve for x
    x = 24,228,665.70/7,890.42
  6. Step 6: Final answer
    x = 3,070.64

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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.