Home / 3,099.51-4,276.08-1,980.16

Finding the Fourth Proportional to 3,099.51, 4,276.08 and 1,980.16

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Solution

The fourth proportional to 3,099.51, 4,276.08 and 1,980.16 is: 2,731.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,099.51 : 4,276.08 = 1,980.16 : x
  2. Step 2: Convert to fraction form
    3,099.51/4,276.08 = 1,980.16/x
  3. Step 3: Cross multiply
    3,099.51x = 4,276.08 × 1,980.16
  4. Step 4: Simplify right side
    3,099.51x = 8,467,306.14
  5. Step 5: Solve for x
    x = 8,467,306.14/3,099.51
  6. Step 6: Final answer
    x = 2,731.82

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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.