Home / 2,557.15-3,831.79-1,515.08

Finding the Fourth Proportional to 2,557.15, 3,831.79 and 1,515.08

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Solution

The fourth proportional to 2,557.15, 3,831.79 and 1,515.08 is: 2,270.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,557.15 : 3,831.79 = 1,515.08 : x
  2. Step 2: Convert to fraction form
    2,557.15/3,831.79 = 1,515.08/x
  3. Step 3: Cross multiply
    2,557.15x = 3,831.79 × 1,515.08
  4. Step 4: Simplify right side
    2,557.15x = 5,805,445.45
  5. Step 5: Solve for x
    x = 5,805,445.45/2,557.15
  6. Step 6: Final answer
    x = 2,270.28

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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.