Home / 2,919.10-4,373.58-1,991.68

Finding the Fourth Proportional to 2,919.10, 4,373.58 and 1,991.68

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Solution

The fourth proportional to 2,919.10, 4,373.58 and 1,991.68 is: 2,984.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.10 : 4,373.58 = 1,991.68 : x
  2. Step 2: Convert to fraction form
    2,919.10/4,373.58 = 1,991.68/x
  3. Step 3: Cross multiply
    2,919.10x = 4,373.58 × 1,991.68
  4. Step 4: Simplify right side
    2,919.10x = 8,710,771.81
  5. Step 5: Solve for x
    x = 8,710,771.81/2,919.10
  6. Step 6: Final answer
    x = 2,984.06

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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.