Home / 5,280.10-7,918.32-2,356.80

Finding the Fourth Proportional to 5,280.10, 7,918.32 and 2,356.80

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Solution

The fourth proportional to 5,280.10, 7,918.32 and 2,356.80 is: 3,534.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.10 : 7,918.32 = 2,356.80 : x
  2. Step 2: Convert to fraction form
    5,280.10/7,918.32 = 2,356.80/x
  3. Step 3: Cross multiply
    5,280.10x = 7,918.32 × 2,356.80
  4. Step 4: Simplify right side
    5,280.10x = 18,661,896.58
  5. Step 5: Solve for x
    x = 18,661,896.58/5,280.10
  6. Step 6: Final answer
    x = 3,534.38

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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.