Home / 5,128.58-7,692.84-1,430.83

Finding the Fourth Proportional to 5,128.58, 7,692.84 and 1,430.83

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Solution

The fourth proportional to 5,128.58, 7,692.84 and 1,430.83 is: 2,146.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.58 : 7,692.84 = 1,430.83 : x
  2. Step 2: Convert to fraction form
    5,128.58/7,692.84 = 1,430.83/x
  3. Step 3: Cross multiply
    5,128.58x = 7,692.84 × 1,430.83
  4. Step 4: Simplify right side
    5,128.58x = 11,007,119.87
  5. Step 5: Solve for x
    x = 11,007,119.87/5,128.58
  6. Step 6: Final answer
    x = 2,146.23

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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.