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Finding the Fourth Proportional to 2,705.60, 4,054.80 and 1,935.20

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Solution

The fourth proportional to 2,705.60, 4,054.80 and 1,935.20 is: 2,900.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,705.60 : 4,054.80 = 1,935.20 : x
  2. Step 2: Convert to fraction form
    2,705.60/4,054.80 = 1,935.20/x
  3. Step 3: Cross multiply
    2,705.60x = 4,054.80 × 1,935.20
  4. Step 4: Simplify right side
    2,705.60x = 7,846,848.96
  5. Step 5: Solve for x
    x = 7,846,848.96/2,705.60
  6. Step 6: Final answer
    x = 2,900.23

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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.