Home / 5,128.13-7,692.93-1,616.95

Finding the Fourth Proportional to 5,128.13, 7,692.93 and 1,616.95

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Solution

The fourth proportional to 5,128.13, 7,692.93 and 1,616.95 is: 2,425.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.13 : 7,692.93 = 1,616.95 : x
  2. Step 2: Convert to fraction form
    5,128.13/7,692.93 = 1,616.95/x
  3. Step 3: Cross multiply
    5,128.13x = 7,692.93 × 1,616.95
  4. Step 4: Simplify right side
    5,128.13x = 12,439,044.70
  5. Step 5: Solve for x
    x = 12,439,044.70/5,128.13
  6. Step 6: Final answer
    x = 2,425.65

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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.