Home / 3,005.30-4,509.84-2,980.54

Finding the Fourth Proportional to 3,005.30, 4,509.84 and 2,980.54

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Solution

The fourth proportional to 3,005.30, 4,509.84 and 2,980.54 is: 4,472.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.30 : 4,509.84 = 2,980.54 : x
  2. Step 2: Convert to fraction form
    3,005.30/4,509.84 = 2,980.54/x
  3. Step 3: Cross multiply
    3,005.30x = 4,509.84 × 2,980.54
  4. Step 4: Simplify right side
    3,005.30x = 13,441,758.51
  5. Step 5: Solve for x
    x = 13,441,758.51/3,005.30
  6. Step 6: Final answer
    x = 4,472.68

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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.