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Finding the Fourth Proportional to 1,898.89, 2,848.25 and 666.36

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Solution

The fourth proportional to 1,898.89, 2,848.25 and 666.36 is: 999.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.89 : 2,848.25 = 666.36 : x
  2. Step 2: Convert to fraction form
    1,898.89/2,848.25 = 666.36/x
  3. Step 3: Cross multiply
    1,898.89x = 2,848.25 × 666.36
  4. Step 4: Simplify right side
    1,898.89x = 1,897,961.54
  5. Step 5: Solve for x
    x = 1,897,961.54/1,898.89
  6. Step 6: Final answer
    x = 999.51

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1.5x scale

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.