Home / 2,359.79-3,256.65-1,311.84

Finding the Fourth Proportional to 2,359.79, 3,256.65 and 1,311.84

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Solution

The fourth proportional to 2,359.79, 3,256.65 and 1,311.84 is: 1,810.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,359.79 : 3,256.65 = 1,311.84 : x
  2. Step 2: Convert to fraction form
    2,359.79/3,256.65 = 1,311.84/x
  3. Step 3: Cross multiply
    2,359.79x = 3,256.65 × 1,311.84
  4. Step 4: Simplify right side
    2,359.79x = 4,272,203.74
  5. Step 5: Solve for x
    x = 4,272,203.74/2,359.79
  6. Step 6: Final answer
    x = 1,810.42

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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.