Home / 5,075.76-7,613.61-1,913.79

Finding the Fourth Proportional to 5,075.76, 7,613.61 and 1,913.79

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Solution

The fourth proportional to 5,075.76, 7,613.61 and 1,913.79 is: 2,870.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,075.76 : 7,613.61 = 1,913.79 : x
  2. Step 2: Convert to fraction form
    5,075.76/7,613.61 = 1,913.79/x
  3. Step 3: Cross multiply
    5,075.76x = 7,613.61 × 1,913.79
  4. Step 4: Simplify right side
    5,075.76x = 14,570,850.68
  5. Step 5: Solve for x
    x = 14,570,850.68/5,075.76
  6. Step 6: Final answer
    x = 2,870.67

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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.