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Finding the Fourth Proportional to 1,913.60, 2,855.08 and 1,705.70

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Solution

The fourth proportional to 1,913.60, 2,855.08 and 1,705.70 is: 2,544.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.60 : 2,855.08 = 1,705.70 : x
  2. Step 2: Convert to fraction form
    1,913.60/2,855.08 = 1,705.70/x
  3. Step 3: Cross multiply
    1,913.60x = 2,855.08 × 1,705.70
  4. Step 4: Simplify right side
    1,913.60x = 4,869,909.96
  5. Step 5: Solve for x
    x = 4,869,909.96/1,913.60
  6. Step 6: Final answer
    x = 2,544.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.