Home / 7,128.24-10,692.36-1,934.88

Finding the Fourth Proportional to 7,128.24, 10,692.36 and 1,934.88

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Solution

The fourth proportional to 7,128.24, 10,692.36 and 1,934.88 is: 2,902.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.24 : 10,692.36 = 1,934.88 : x
  2. Step 2: Convert to fraction form
    7,128.24/10,692.36 = 1,934.88/x
  3. Step 3: Cross multiply
    7,128.24x = 10,692.36 × 1,934.88
  4. Step 4: Simplify right side
    7,128.24x = 20,688,433.52
  5. Step 5: Solve for x
    x = 20,688,433.52/7,128.24
  6. Step 6: Final answer
    x = 2,902.32

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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.