Home / 1,943.43-2,679.81-1,312.86

Finding the Fourth Proportional to 1,943.43, 2,679.81 and 1,312.86

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Solution

The fourth proportional to 1,943.43, 2,679.81 and 1,312.86 is: 1,810.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.43 : 2,679.81 = 1,312.86 : x
  2. Step 2: Convert to fraction form
    1,943.43/2,679.81 = 1,312.86/x
  3. Step 3: Cross multiply
    1,943.43x = 2,679.81 × 1,312.86
  4. Step 4: Simplify right side
    1,943.43x = 3,518,218.64
  5. Step 5: Solve for x
    x = 3,518,218.64/1,943.43
  6. Step 6: Final answer
    x = 1,810.32

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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.