Home / 3,619.19-5,428.79-1,770.45

Finding the Fourth Proportional to 3,619.19, 5,428.79 and 1,770.45

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Solution

The fourth proportional to 3,619.19, 5,428.79 and 1,770.45 is: 2,655.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.19 : 5,428.79 = 1,770.45 : x
  2. Step 2: Convert to fraction form
    3,619.19/5,428.79 = 1,770.45/x
  3. Step 3: Cross multiply
    3,619.19x = 5,428.79 × 1,770.45
  4. Step 4: Simplify right side
    3,619.19x = 9,611,392.40
  5. Step 5: Solve for x
    x = 9,611,392.40/3,619.19
  6. Step 6: Final answer
    x = 2,655.68

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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.