Home / 1,941.70-2,679.60-1,102.30

Finding the Fourth Proportional to 1,941.70, 2,679.60 and 1,102.30

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Solution

The fourth proportional to 1,941.70, 2,679.60 and 1,102.30 is: 1,521.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.70 : 2,679.60 = 1,102.30 : x
  2. Step 2: Convert to fraction form
    1,941.70/2,679.60 = 1,102.30/x
  3. Step 3: Cross multiply
    1,941.70x = 2,679.60 × 1,102.30
  4. Step 4: Simplify right side
    1,941.70x = 2,953,723.08
  5. Step 5: Solve for x
    x = 2,953,723.08/1,941.70
  6. Step 6: Final answer
    x = 1,521.20

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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.