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Finding the Fourth Proportional to 1,898.73, 2,848.95 and 803.79

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Solution

The fourth proportional to 1,898.73, 2,848.95 and 803.79 is: 1,206.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.73 : 2,848.95 = 803.79 : x
  2. Step 2: Convert to fraction form
    1,898.73/2,848.95 = 803.79/x
  3. Step 3: Cross multiply
    1,898.73x = 2,848.95 × 803.79
  4. Step 4: Simplify right side
    1,898.73x = 2,289,957.52
  5. Step 5: Solve for x
    x = 2,289,957.52/1,898.73
  6. Step 6: Final answer
    x = 1,206.05

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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.