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Finding the Fourth Proportional to 5,201.65, 7,798.83 and 1,914.31

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Solution

The fourth proportional to 5,201.65, 7,798.83 and 1,914.31 is: 2,870.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,201.65 : 7,798.83 = 1,914.31 : x
  2. Step 2: Convert to fraction form
    5,201.65/7,798.83 = 1,914.31/x
  3. Step 3: Cross multiply
    5,201.65x = 7,798.83 × 1,914.31
  4. Step 4: Simplify right side
    5,201.65x = 14,929,395.45
  5. Step 5: Solve for x
    x = 14,929,395.45/5,201.65
  6. Step 6: Final answer
    x = 2,870.13

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1.5x scale

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.