Home / 2,981.54-4,115.94-1,864.12

Finding the Fourth Proportional to 2,981.54, 4,115.94 and 1,864.12

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Solution

The fourth proportional to 2,981.54, 4,115.94 and 1,864.12 is: 2,573.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.54 : 4,115.94 = 1,864.12 : x
  2. Step 2: Convert to fraction form
    2,981.54/4,115.94 = 1,864.12/x
  3. Step 3: Cross multiply
    2,981.54x = 4,115.94 × 1,864.12
  4. Step 4: Simplify right side
    2,981.54x = 7,672,595.78
  5. Step 5: Solve for x
    x = 7,672,595.78/2,981.54
  6. Step 6: Final answer
    x = 2,573.37

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1.5x scale

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.