Home / 7,692.20-11,543.70-3,312.80

Finding the Fourth Proportional to 7,692.20, 11,543.70 and 3,312.80

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Solution

The fourth proportional to 7,692.20, 11,543.70 and 3,312.80 is: 4,971.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,692.20 : 11,543.70 = 3,312.80 : x
  2. Step 2: Convert to fraction form
    7,692.20/11,543.70 = 3,312.80/x
  3. Step 3: Cross multiply
    7,692.20x = 11,543.70 × 3,312.80
  4. Step 4: Simplify right side
    7,692.20x = 38,241,969.36
  5. Step 5: Solve for x
    x = 38,241,969.36/7,692.20
  6. Step 6: Final answer
    x = 4,971.53

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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.