Home / 5,015.40-7,531.20-3,784.20

Finding the Fourth Proportional to 5,015.40, 7,531.20 and 3,784.20

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Solution

The fourth proportional to 5,015.40, 7,531.20 and 3,784.20 is: 5,682.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.40 : 7,531.20 = 3,784.20 : x
  2. Step 2: Convert to fraction form
    5,015.40/7,531.20 = 3,784.20/x
  3. Step 3: Cross multiply
    5,015.40x = 7,531.20 × 3,784.20
  4. Step 4: Simplify right side
    5,015.40x = 28,499,567.04
  5. Step 5: Solve for x
    x = 28,499,567.04/5,015.40
  6. Step 6: Final answer
    x = 5,682.41

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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.