Home / 1,812.21-2,500.73-1,015.40

Finding the Fourth Proportional to 1,812.21, 2,500.73 and 1,015.40

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Solution

The fourth proportional to 1,812.21, 2,500.73 and 1,015.40 is: 1,401.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.21 : 2,500.73 = 1,015.40 : x
  2. Step 2: Convert to fraction form
    1,812.21/2,500.73 = 1,015.40/x
  3. Step 3: Cross multiply
    1,812.21x = 2,500.73 × 1,015.40
  4. Step 4: Simplify right side
    1,812.21x = 2,539,223.66
  5. Step 5: Solve for x
    x = 2,539,223.66/1,812.21
  6. Step 6: Final answer
    x = 1,401.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.