Home / 5,126.39-7,075.08-2,888.70

Finding the Fourth Proportional to 5,126.39, 7,075.08 and 2,888.70

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Solution

The fourth proportional to 5,126.39, 7,075.08 and 2,888.70 is: 3,986.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.39 : 7,075.08 = 2,888.70 : x
  2. Step 2: Convert to fraction form
    5,126.39/7,075.08 = 2,888.70/x
  3. Step 3: Cross multiply
    5,126.39x = 7,075.08 × 2,888.70
  4. Step 4: Simplify right side
    5,126.39x = 20,437,783.60
  5. Step 5: Solve for x
    x = 20,437,783.60/5,126.39
  6. Step 6: Final answer
    x = 3,986.78

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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.