Home / 7,121.72-10,692.30-4,536.20

Finding the Fourth Proportional to 7,121.72, 10,692.30 and 4,536.20

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Solution

The fourth proportional to 7,121.72, 10,692.30 and 4,536.20 is: 6,810.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.72 : 10,692.30 = 4,536.20 : x
  2. Step 2: Convert to fraction form
    7,121.72/10,692.30 = 4,536.20/x
  3. Step 3: Cross multiply
    7,121.72x = 10,692.30 × 4,536.20
  4. Step 4: Simplify right side
    7,121.72x = 48,502,411.26
  5. Step 5: Solve for x
    x = 48,502,411.26/7,121.72
  6. Step 6: Final answer
    x = 6,810.49

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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.