Home / 1,892.08-2,611.20-1,146.40

Finding the Fourth Proportional to 1,892.08, 2,611.20 and 1,146.40

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Solution

The fourth proportional to 1,892.08, 2,611.20 and 1,146.40 is: 1,582.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,892.08 : 2,611.20 = 1,146.40 : x
  2. Step 2: Convert to fraction form
    1,892.08/2,611.20 = 1,146.40/x
  3. Step 3: Cross multiply
    1,892.08x = 2,611.20 × 1,146.40
  4. Step 4: Simplify right side
    1,892.08x = 2,993,479.68
  5. Step 5: Solve for x
    x = 2,993,479.68/1,892.08
  6. Step 6: Final answer
    x = 1,582.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.