Home / 5,210.28-7,811.96-2,871.40

Finding the Fourth Proportional to 5,210.28, 7,811.96 and 2,871.40

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Solution

The fourth proportional to 5,210.28, 7,811.96 and 2,871.40 is: 4,305.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,210.28 : 7,811.96 = 2,871.40 : x
  2. Step 2: Convert to fraction form
    5,210.28/7,811.96 = 2,871.40/x
  3. Step 3: Cross multiply
    5,210.28x = 7,811.96 × 2,871.40
  4. Step 4: Simplify right side
    5,210.28x = 22,431,261.94
  5. Step 5: Solve for x
    x = 22,431,261.94/5,210.28
  6. Step 6: Final answer
    x = 4,305.19

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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.