Home / 4,980.12-6,873.04-2,990.76

Finding the Fourth Proportional to 4,980.12, 6,873.04 and 2,990.76

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Solution

The fourth proportional to 4,980.12, 6,873.04 and 2,990.76 is: 4,127.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.12 : 6,873.04 = 2,990.76 : x
  2. Step 2: Convert to fraction form
    4,980.12/6,873.04 = 2,990.76/x
  3. Step 3: Cross multiply
    4,980.12x = 6,873.04 × 2,990.76
  4. Step 4: Simplify right side
    4,980.12x = 20,555,613.11
  5. Step 5: Solve for x
    x = 20,555,613.11/4,980.12
  6. Step 6: Final answer
    x = 4,127.53

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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.