Home / 7,128.48-10,692.70-1,934.22

Finding the Fourth Proportional to 7,128.48, 10,692.70 and 1,934.22

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Solution

The fourth proportional to 7,128.48, 10,692.70 and 1,934.22 is: 2,901.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.48 : 10,692.70 = 1,934.22 : x
  2. Step 2: Convert to fraction form
    7,128.48/10,692.70 = 1,934.22/x
  3. Step 3: Cross multiply
    7,128.48x = 10,692.70 × 1,934.22
  4. Step 4: Simplify right side
    7,128.48x = 20,682,034.19
  5. Step 5: Solve for x
    x = 20,682,034.19/7,128.48
  6. Step 6: Final answer
    x = 2,901.32

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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.