Home / 5,261.60-7,891.65-1,563.68

Finding the Fourth Proportional to 5,261.60, 7,891.65 and 1,563.68

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Solution

The fourth proportional to 5,261.60, 7,891.65 and 1,563.68 is: 2,345.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.60 : 7,891.65 = 1,563.68 : x
  2. Step 2: Convert to fraction form
    5,261.60/7,891.65 = 1,563.68/x
  3. Step 3: Cross multiply
    5,261.60x = 7,891.65 × 1,563.68
  4. Step 4: Simplify right side
    5,261.60x = 12,339,975.81
  5. Step 5: Solve for x
    x = 12,339,975.81/5,261.60
  6. Step 6: Final answer
    x = 2,345.29

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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.