Home / 1,838.90-2,540.15-1,812.13

Finding the Fourth Proportional to 1,838.90, 2,540.15 and 1,812.13

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Solution

The fourth proportional to 1,838.90, 2,540.15 and 1,812.13 is: 2,503.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,838.90 : 2,540.15 = 1,812.13 : x
  2. Step 2: Convert to fraction form
    1,838.90/2,540.15 = 1,812.13/x
  3. Step 3: Cross multiply
    1,838.90x = 2,540.15 × 1,812.13
  4. Step 4: Simplify right side
    1,838.90x = 4,603,088.72
  5. Step 5: Solve for x
    x = 4,603,088.72/1,838.90
  6. Step 6: Final answer
    x = 2,503.17

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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.