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Finding the Fourth Proportional to 5,619.74, 8,427.53 and 1,870.83

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Solution

The fourth proportional to 5,619.74, 8,427.53 and 1,870.83 is: 2,805.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.74 : 8,427.53 = 1,870.83 : x
  2. Step 2: Convert to fraction form
    5,619.74/8,427.53 = 1,870.83/x
  3. Step 3: Cross multiply
    5,619.74x = 8,427.53 × 1,870.83
  4. Step 4: Simplify right side
    5,619.74x = 15,766,480.63
  5. Step 5: Solve for x
    x = 15,766,480.63/5,619.74
  6. Step 6: Final answer
    x = 2,805.56

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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.