Home / 2,860.16-4,290.50-1,128.38

Finding the Fourth Proportional to 2,860.16, 4,290.50 and 1,128.38

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Solution

The fourth proportional to 2,860.16, 4,290.50 and 1,128.38 is: 1,692.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.16 : 4,290.50 = 1,128.38 : x
  2. Step 2: Convert to fraction form
    2,860.16/4,290.50 = 1,128.38/x
  3. Step 3: Cross multiply
    2,860.16x = 4,290.50 × 1,128.38
  4. Step 4: Simplify right side
    2,860.16x = 4,841,295.76
  5. Step 5: Solve for x
    x = 4,841,295.76/2,860.16
  6. Step 6: Final answer
    x = 1,692.67

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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.