Home / 4,980.34-6,872.61-3,718.90

Finding the Fourth Proportional to 4,980.34, 6,872.61 and 3,718.90

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Solution

The fourth proportional to 4,980.34, 6,872.61 and 3,718.90 is: 5,131.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.34 : 6,872.61 = 3,718.90 : x
  2. Step 2: Convert to fraction form
    4,980.34/6,872.61 = 3,718.90/x
  3. Step 3: Cross multiply
    4,980.34x = 6,872.61 × 3,718.90
  4. Step 4: Simplify right side
    4,980.34x = 25,558,549.33
  5. Step 5: Solve for x
    x = 25,558,549.33/4,980.34
  6. Step 6: Final answer
    x = 5,131.89

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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.