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Finding the Fourth Proportional to 5,275.83, 7,907.62 and 1,986.83

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Solution

The fourth proportional to 5,275.83, 7,907.62 and 1,986.83 is: 2,977.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.83 : 7,907.62 = 1,986.83 : x
  2. Step 2: Convert to fraction form
    5,275.83/7,907.62 = 1,986.83/x
  3. Step 3: Cross multiply
    5,275.83x = 7,907.62 × 1,986.83
  4. Step 4: Simplify right side
    5,275.83x = 15,711,096.64
  5. Step 5: Solve for x
    x = 15,711,096.64/5,275.83
  6. Step 6: Final answer
    x = 2,977.94

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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.