Home / 2,381.02-3,285.52-1,386.49

Finding the Fourth Proportional to 2,381.02, 3,285.52 and 1,386.49

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Solution

The fourth proportional to 2,381.02, 3,285.52 and 1,386.49 is: 1,913.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.02 : 3,285.52 = 1,386.49 : x
  2. Step 2: Convert to fraction form
    2,381.02/3,285.52 = 1,386.49/x
  3. Step 3: Cross multiply
    2,381.02x = 3,285.52 × 1,386.49
  4. Step 4: Simplify right side
    2,381.02x = 4,555,340.62
  5. Step 5: Solve for x
    x = 4,555,340.62/2,381.02
  6. Step 6: Final answer
    x = 1,913.19

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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.