Home / 3,311.66-4,569.50-1,986.09

Finding the Fourth Proportional to 3,311.66, 4,569.50 and 1,986.09

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Solution

The fourth proportional to 3,311.66, 4,569.50 and 1,986.09 is: 2,740.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.66 : 4,569.50 = 1,986.09 : x
  2. Step 2: Convert to fraction form
    3,311.66/4,569.50 = 1,986.09/x
  3. Step 3: Cross multiply
    3,311.66x = 4,569.50 × 1,986.09
  4. Step 4: Simplify right side
    3,311.66x = 9,075,428.32
  5. Step 5: Solve for x
    x = 9,075,428.32/3,311.66
  6. Step 6: Final answer
    x = 2,740.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.