Home / 2,117.44-3,178.32-1,421.92

Finding the Fourth Proportional to 2,117.44, 3,178.32 and 1,421.92

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Solution

The fourth proportional to 2,117.44, 3,178.32 and 1,421.92 is: 2,134.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.44 : 3,178.32 = 1,421.92 : x
  2. Step 2: Convert to fraction form
    2,117.44/3,178.32 = 1,421.92/x
  3. Step 3: Cross multiply
    2,117.44x = 3,178.32 × 1,421.92
  4. Step 4: Simplify right side
    2,117.44x = 4,519,316.77
  5. Step 5: Solve for x
    x = 4,519,316.77/2,117.44
  6. Step 6: Final answer
    x = 2,134.33

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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.