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Finding the Fourth Proportional to 5,203.80, 7,800.96 and 1,914.60

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Solution

The fourth proportional to 5,203.80, 7,800.96 and 1,914.60 is: 2,870.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,203.80 : 7,800.96 = 1,914.60 : x
  2. Step 2: Convert to fraction form
    5,203.80/7,800.96 = 1,914.60/x
  3. Step 3: Cross multiply
    5,203.80x = 7,800.96 × 1,914.60
  4. Step 4: Simplify right side
    5,203.80x = 14,935,718.02
  5. Step 5: Solve for x
    x = 14,935,718.02/5,203.80
  6. Step 6: Final answer
    x = 2,870.16

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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.