Home / 2,681.40-4,023.10-1,121.58

Finding the Fourth Proportional to 2,681.40, 4,023.10 and 1,121.58

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Solution

The fourth proportional to 2,681.40, 4,023.10 and 1,121.58 is: 1,682.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.40 : 4,023.10 = 1,121.58 : x
  2. Step 2: Convert to fraction form
    2,681.40/4,023.10 = 1,121.58/x
  3. Step 3: Cross multiply
    2,681.40x = 4,023.10 × 1,121.58
  4. Step 4: Simplify right side
    2,681.40x = 4,512,228.50
  5. Step 5: Solve for x
    x = 4,512,228.50/2,681.40
  6. Step 6: Final answer
    x = 1,682.79

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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.