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Finding the Fourth Proportional to 1,810.06, 2,714.11 and 640.01

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Solution

The fourth proportional to 1,810.06, 2,714.11 and 640.01 is: 959.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,810.06 : 2,714.11 = 640.01 : x
  2. Step 2: Convert to fraction form
    1,810.06/2,714.11 = 640.01/x
  3. Step 3: Cross multiply
    1,810.06x = 2,714.11 × 640.01
  4. Step 4: Simplify right side
    1,810.06x = 1,737,062.73
  5. Step 5: Solve for x
    x = 1,737,062.73/1,810.06
  6. Step 6: Final answer
    x = 959.67

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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.