Home / 3,045.09-4,197.90-2,160.57

Finding the Fourth Proportional to 3,045.09, 4,197.90 and 2,160.57

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Solution

The fourth proportional to 3,045.09, 4,197.90 and 2,160.57 is: 2,978.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,045.09 : 4,197.90 = 2,160.57 : x
  2. Step 2: Convert to fraction form
    3,045.09/4,197.90 = 2,160.57/x
  3. Step 3: Cross multiply
    3,045.09x = 4,197.90 × 2,160.57
  4. Step 4: Simplify right side
    3,045.09x = 9,069,856.80
  5. Step 5: Solve for x
    x = 9,069,856.80/3,045.09
  6. Step 6: Final answer
    x = 2,978.52

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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.