Home / 5,015.40-7,506.90-3,913.80

Finding the Fourth Proportional to 5,015.40, 7,506.90 and 3,913.80

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Solution

The fourth proportional to 5,015.40, 7,506.90 and 3,913.80 is: 5,858.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.40 : 7,506.90 = 3,913.80 : x
  2. Step 2: Convert to fraction form
    5,015.40/7,506.90 = 3,913.80/x
  3. Step 3: Cross multiply
    5,015.40x = 7,506.90 × 3,913.80
  4. Step 4: Simplify right side
    5,015.40x = 29,380,505.22
  5. Step 5: Solve for x
    x = 29,380,505.22/5,015.40
  6. Step 6: Final answer
    x = 5,858.06

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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.