Home / 12,312.36-18,458.58-3,874.56

Finding the Fourth Proportional to 12,312.36, 18,458.58 and 3,874.56

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Solution

The fourth proportional to 12,312.36, 18,458.58 and 3,874.56 is: 5,808.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312.36 : 18,458.58 = 3,874.56 : x
  2. Step 2: Convert to fraction form
    12,312.36/18,458.58 = 3,874.56/x
  3. Step 3: Cross multiply
    12,312.36x = 18,458.58 × 3,874.56
  4. Step 4: Simplify right side
    12,312.36x = 71,518,875.72
  5. Step 5: Solve for x
    x = 71,518,875.72/12,312.36
  6. Step 6: Final answer
    x = 5,808.71

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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.