Home / 7,123.21-10,686.03-3,175.90

Finding the Fourth Proportional to 7,123.21, 10,686.03 and 3,175.90

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Solution

The fourth proportional to 7,123.21, 10,686.03 and 3,175.90 is: 4,764.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123.21 : 10,686.03 = 3,175.90 : x
  2. Step 2: Convert to fraction form
    7,123.21/10,686.03 = 3,175.90/x
  3. Step 3: Cross multiply
    7,123.21x = 10,686.03 × 3,175.90
  4. Step 4: Simplify right side
    7,123.21x = 33,937,762.68
  5. Step 5: Solve for x
    x = 33,937,762.68/7,123.21
  6. Step 6: Final answer
    x = 4,764.39

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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.