Home / 2,860.19-3,948.84-2,195.72

Finding the Fourth Proportional to 2,860.19, 3,948.84 and 2,195.72

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Solution

The fourth proportional to 2,860.19, 3,948.84 and 2,195.72 is: 3,031.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.19 : 3,948.84 = 2,195.72 : x
  2. Step 2: Convert to fraction form
    2,860.19/3,948.84 = 2,195.72/x
  3. Step 3: Cross multiply
    2,860.19x = 3,948.84 × 2,195.72
  4. Step 4: Simplify right side
    2,860.19x = 8,670,527.22
  5. Step 5: Solve for x
    x = 8,670,527.22/2,860.19
  6. Step 6: Final answer
    x = 3,031.46

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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.