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Finding the Fourth Proportional to 1,898.90, 2,848.11 and 512.34

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Solution

The fourth proportional to 1,898.90, 2,848.11 and 512.34 is: 768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.90 : 2,848.11 = 512.34 : x
  2. Step 2: Convert to fraction form
    1,898.90/2,848.11 = 512.34/x
  3. Step 3: Cross multiply
    1,898.90x = 2,848.11 × 512.34
  4. Step 4: Simplify right side
    1,898.90x = 1,459,200.68
  5. Step 5: Solve for x
    x = 1,459,200.68/1,898.90
  6. Step 6: Final answer
    x = 768.45

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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.