Home / 2,974.60-4,105.20-1,648.72

Finding the Fourth Proportional to 2,974.60, 4,105.20 and 1,648.72

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Solution

The fourth proportional to 2,974.60, 4,105.20 and 1,648.72 is: 2,275.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,974.60 : 4,105.20 = 1,648.72 : x
  2. Step 2: Convert to fraction form
    2,974.60/4,105.20 = 1,648.72/x
  3. Step 3: Cross multiply
    2,974.60x = 4,105.20 × 1,648.72
  4. Step 4: Simplify right side
    2,974.60x = 6,768,325.34
  5. Step 5: Solve for x
    x = 6,768,325.34/2,974.60
  6. Step 6: Final answer
    x = 2,275.37

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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.