Home / 3,015.78-4,530.62-2,140.46

Finding the Fourth Proportional to 3,015.78, 4,530.62 and 2,140.46

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Solution

The fourth proportional to 3,015.78, 4,530.62 and 2,140.46 is: 3,215.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.78 : 4,530.62 = 2,140.46 : x
  2. Step 2: Convert to fraction form
    3,015.78/4,530.62 = 2,140.46/x
  3. Step 3: Cross multiply
    3,015.78x = 4,530.62 × 2,140.46
  4. Step 4: Simplify right side
    3,015.78x = 9,697,610.89
  5. Step 5: Solve for x
    x = 9,697,610.89/3,015.78
  6. Step 6: Final answer
    x = 3,215.62

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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.