Home / 2,921.54-4,391.53-2,515.57

Finding the Fourth Proportional to 2,921.54, 4,391.53 and 2,515.57

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Solution

The fourth proportional to 2,921.54, 4,391.53 and 2,515.57 is: 3,781.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.54 : 4,391.53 = 2,515.57 : x
  2. Step 2: Convert to fraction form
    2,921.54/4,391.53 = 2,515.57/x
  3. Step 3: Cross multiply
    2,921.54x = 4,391.53 × 2,515.57
  4. Step 4: Simplify right side
    2,921.54x = 11,047,222.71
  5. Step 5: Solve for x
    x = 11,047,222.71/2,921.54
  6. Step 6: Final answer
    x = 3,781.31

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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.