Home / 2,920.68-4,381.02-1,189.26

Finding the Fourth Proportional to 2,920.68, 4,381.02 and 1,189.26

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Solution

The fourth proportional to 2,920.68, 4,381.02 and 1,189.26 is: 1,783.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.68 : 4,381.02 = 1,189.26 : x
  2. Step 2: Convert to fraction form
    2,920.68/4,381.02 = 1,189.26/x
  3. Step 3: Cross multiply
    2,920.68x = 4,381.02 × 1,189.26
  4. Step 4: Simplify right side
    2,920.68x = 5,210,171.85
  5. Step 5: Solve for x
    x = 5,210,171.85/2,920.68
  6. Step 6: Final answer
    x = 1,783.89

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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.