Home / 7,382.79-11,075.28-2,638.57

Finding the Fourth Proportional to 7,382.79, 11,075.28 and 2,638.57

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Solution

The fourth proportional to 7,382.79, 11,075.28 and 2,638.57 is: 3,958.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,382.79 : 11,075.28 = 2,638.57 : x
  2. Step 2: Convert to fraction form
    7,382.79/11,075.28 = 2,638.57/x
  3. Step 3: Cross multiply
    7,382.79x = 11,075.28 × 2,638.57
  4. Step 4: Simplify right side
    7,382.79x = 29,222,901.55
  5. Step 5: Solve for x
    x = 29,222,901.55/7,382.79
  6. Step 6: Final answer
    x = 3,958.25

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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.