Home / 9,128.55-13,692.74-2,888.57

Finding the Fourth Proportional to 9,128.55, 13,692.74 and 2,888.57

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Solution

The fourth proportional to 9,128.55, 13,692.74 and 2,888.57 is: 4,332.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.55 : 13,692.74 = 2,888.57 : x
  2. Step 2: Convert to fraction form
    9,128.55/13,692.74 = 2,888.57/x
  3. Step 3: Cross multiply
    9,128.55x = 13,692.74 × 2,888.57
  4. Step 4: Simplify right side
    9,128.55x = 39,552,479.44
  5. Step 5: Solve for x
    x = 39,552,479.44/9,128.55
  6. Step 6: Final answer
    x = 4,332.83

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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.