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Finding the Fourth Proportional to 1,937.64, 2,891.19 and 1,820.07

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Solution

The fourth proportional to 1,937.64, 2,891.19 and 1,820.07 is: 2,715.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,937.64 : 2,891.19 = 1,820.07 : x
  2. Step 2: Convert to fraction form
    1,937.64/2,891.19 = 1,820.07/x
  3. Step 3: Cross multiply
    1,937.64x = 2,891.19 × 1,820.07
  4. Step 4: Simplify right side
    1,937.64x = 5,262,168.18
  5. Step 5: Solve for x
    x = 5,262,168.18/1,937.64
  6. Step 6: Final answer
    x = 2,715.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.