Home / 3,111.49-4,666.11-1,356.40

Finding the Fourth Proportional to 3,111.49, 4,666.11 and 1,356.40

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Solution

The fourth proportional to 3,111.49, 4,666.11 and 1,356.40 is: 2,034.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.49 : 4,666.11 = 1,356.40 : x
  2. Step 2: Convert to fraction form
    3,111.49/4,666.11 = 1,356.40/x
  3. Step 3: Cross multiply
    3,111.49x = 4,666.11 × 1,356.40
  4. Step 4: Simplify right side
    3,111.49x = 6,329,111.60
  5. Step 5: Solve for x
    x = 6,329,111.60/3,111.49
  6. Step 6: Final answer
    x = 2,034.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.