Home / 12,619.19-18,931.57-3,854.79

Finding the Fourth Proportional to 12,619.19, 18,931.57 and 3,854.79

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Solution

The fourth proportional to 12,619.19, 18,931.57 and 3,854.79 is: 5,783.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.19 : 18,931.57 = 3,854.79 : x
  2. Step 2: Convert to fraction form
    12,619.19/18,931.57 = 3,854.79/x
  3. Step 3: Cross multiply
    12,619.19x = 18,931.57 × 3,854.79
  4. Step 4: Simplify right side
    12,619.19x = 72,977,238.77
  5. Step 5: Solve for x
    x = 72,977,238.77/12,619.19
  6. Step 6: Final answer
    x = 5,783.04

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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.