Home / 3,315.34-4,575.60-2,139.82

Finding the Fourth Proportional to 3,315.34, 4,575.60 and 2,139.82

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Solution

The fourth proportional to 3,315.34, 4,575.60 and 2,139.82 is: 2,953.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.34 : 4,575.60 = 2,139.82 : x
  2. Step 2: Convert to fraction form
    3,315.34/4,575.60 = 2,139.82/x
  3. Step 3: Cross multiply
    3,315.34x = 4,575.60 × 2,139.82
  4. Step 4: Simplify right side
    3,315.34x = 9,790,960.39
  5. Step 5: Solve for x
    x = 9,790,960.39/3,315.34
  6. Step 6: Final answer
    x = 2,953.23

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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.