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Finding the Fourth Proportional to 1,872.18, 2,806.35 and 898.98

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Solution

The fourth proportional to 1,872.18, 2,806.35 and 898.98 is: 1,347.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.18 : 2,806.35 = 898.98 : x
  2. Step 2: Convert to fraction form
    1,872.18/2,806.35 = 898.98/x
  3. Step 3: Cross multiply
    1,872.18x = 2,806.35 × 898.98
  4. Step 4: Simplify right side
    1,872.18x = 2,522,852.52
  5. Step 5: Solve for x
    x = 2,522,852.52/1,872.18
  6. Step 6: Final answer
    x = 1,347.55

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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.