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Finding the Fourth Proportional to 1,898.85, 2,848.35 and 729.42

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Solution

The fourth proportional to 1,898.85, 2,848.35 and 729.42 is: 1,094.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.85 : 2,848.35 = 729.42 : x
  2. Step 2: Convert to fraction form
    1,898.85/2,848.35 = 729.42/x
  3. Step 3: Cross multiply
    1,898.85x = 2,848.35 × 729.42
  4. Step 4: Simplify right side
    1,898.85x = 2,077,643.46
  5. Step 5: Solve for x
    x = 2,077,643.46/1,898.85
  6. Step 6: Final answer
    x = 1,094.16

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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.