Home / 4,980.40-6,872.92-2,742.16

Finding the Fourth Proportional to 4,980.40, 6,872.92 and 2,742.16

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Solution

The fourth proportional to 4,980.40, 6,872.92 and 2,742.16 is: 3,784.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.40 : 6,872.92 = 2,742.16 : x
  2. Step 2: Convert to fraction form
    4,980.40/6,872.92 = 2,742.16/x
  3. Step 3: Cross multiply
    4,980.40x = 6,872.92 × 2,742.16
  4. Step 4: Simplify right side
    4,980.40x = 18,846,646.31
  5. Step 5: Solve for x
    x = 18,846,646.31/4,980.40
  6. Step 6: Final answer
    x = 3,784.16

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1.5x scale

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.