Home / 5,619.34-8,419.95-2,986.78

Finding the Fourth Proportional to 5,619.34, 8,419.95 and 2,986.78

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Solution

The fourth proportional to 5,619.34, 8,419.95 and 2,986.78 is: 4,475.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.34 : 8,419.95 = 2,986.78 : x
  2. Step 2: Convert to fraction form
    5,619.34/8,419.95 = 2,986.78/x
  3. Step 3: Cross multiply
    5,619.34x = 8,419.95 × 2,986.78
  4. Step 4: Simplify right side
    5,619.34x = 25,148,538.26
  5. Step 5: Solve for x
    x = 25,148,538.26/5,619.34
  6. Step 6: Final answer
    x = 4,475.35

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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.