Home / 5,237.60-7,856.40-1,949.80

Finding the Fourth Proportional to 5,237.60, 7,856.40 and 1,949.80

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Solution

The fourth proportional to 5,237.60, 7,856.40 and 1,949.80 is: 2,924.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,237.60 : 7,856.40 = 1,949.80 : x
  2. Step 2: Convert to fraction form
    5,237.60/7,856.40 = 1,949.80/x
  3. Step 3: Cross multiply
    5,237.60x = 7,856.40 × 1,949.80
  4. Step 4: Simplify right side
    5,237.60x = 15,318,408.72
  5. Step 5: Solve for x
    x = 15,318,408.72/5,237.60
  6. Step 6: Final answer
    x = 2,924.70

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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.