Home / 4,989.50-7,465.44-2,980.75

Finding the Fourth Proportional to 4,989.50, 7,465.44 and 2,980.75

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Solution

The fourth proportional to 4,989.50, 7,465.44 and 2,980.75 is: 4,459.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.50 : 7,465.44 = 2,980.75 : x
  2. Step 2: Convert to fraction form
    4,989.50/7,465.44 = 2,980.75/x
  3. Step 3: Cross multiply
    4,989.50x = 7,465.44 × 2,980.75
  4. Step 4: Simplify right side
    4,989.50x = 22,252,610.28
  5. Step 5: Solve for x
    x = 22,252,610.28/4,989.50
  6. Step 6: Final answer
    x = 4,459.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.