Home / 3,990.02-5,509.55-2,933.69

Finding the Fourth Proportional to 3,990.02, 5,509.55 and 2,933.69

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Solution

The fourth proportional to 3,990.02, 5,509.55 and 2,933.69 is: 4,050.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.02 : 5,509.55 = 2,933.69 : x
  2. Step 2: Convert to fraction form
    3,990.02/5,509.55 = 2,933.69/x
  3. Step 3: Cross multiply
    3,990.02x = 5,509.55 × 2,933.69
  4. Step 4: Simplify right side
    3,990.02x = 16,163,291.53
  5. Step 5: Solve for x
    x = 16,163,291.53/3,990.02
  6. Step 6: Final answer
    x = 4,050.94

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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.