Home / 1,359.06-1,872.66-1,210.11

Finding the Fourth Proportional to 1,359.06, 1,872.66 and 1,210.11

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Solution

The fourth proportional to 1,359.06, 1,872.66 and 1,210.11 is: 1,667.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.06 : 1,872.66 = 1,210.11 : x
  2. Step 2: Convert to fraction form
    1,359.06/1,872.66 = 1,210.11/x
  3. Step 3: Cross multiply
    1,359.06x = 1,872.66 × 1,210.11
  4. Step 4: Simplify right side
    1,359.06x = 2,266,124.59
  5. Step 5: Solve for x
    x = 2,266,124.59/1,359.06
  6. Step 6: Final answer
    x = 1,667.42

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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.