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Finding the Fourth Proportional to 1,477.91, 2,037.90 and 1,005.88

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Solution

The fourth proportional to 1,477.91, 2,037.90 and 1,005.88 is: 1,387.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.91 : 2,037.90 = 1,005.88 : x
  2. Step 2: Convert to fraction form
    1,477.91/2,037.90 = 1,005.88/x
  3. Step 3: Cross multiply
    1,477.91x = 2,037.90 × 1,005.88
  4. Step 4: Simplify right side
    1,477.91x = 2,049,882.85
  5. Step 5: Solve for x
    x = 2,049,882.85/1,477.91
  6. Step 6: Final answer
    x = 1,387.01

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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.