Home / 4,871.40-6,720.72-3,102.66

Finding the Fourth Proportional to 4,871.40, 6,720.72 and 3,102.66

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Solution

The fourth proportional to 4,871.40, 6,720.72 and 3,102.66 is: 4,280.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,871.40 : 6,720.72 = 3,102.66 : x
  2. Step 2: Convert to fraction form
    4,871.40/6,720.72 = 3,102.66/x
  3. Step 3: Cross multiply
    4,871.40x = 6,720.72 × 3,102.66
  4. Step 4: Simplify right side
    4,871.40x = 20,852,109.12
  5. Step 5: Solve for x
    x = 20,852,109.12/4,871.40
  6. Step 6: Final answer
    x = 4,280.52

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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.