Home / 5,276.10-7,280.78-2,886

Finding the Fourth Proportional to 5,276.10, 7,280.78 and 2,886

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Solution

The fourth proportional to 5,276.10, 7,280.78 and 2,886 is: 3,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.10 : 7,280.78 = 2,886 : x
  2. Step 2: Convert to fraction form
    5,276.10/7,280.78 = 2,886/x
  3. Step 3: Cross multiply
    5,276.10x = 7,280.78 × 2,886
  4. Step 4: Simplify right side
    5,276.10x = 21,012,331.08
  5. Step 5: Solve for x
    x = 21,012,331.08/5,276.10
  6. Step 6: Final answer
    x = 3,982.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.