Home / 2,206.61-3,045.81-1,420.66

Finding the Fourth Proportional to 2,206.61, 3,045.81 and 1,420.66

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Solution

The fourth proportional to 2,206.61, 3,045.81 and 1,420.66 is: 1,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,206.61 : 3,045.81 = 1,420.66 : x
  2. Step 2: Convert to fraction form
    2,206.61/3,045.81 = 1,420.66/x
  3. Step 3: Cross multiply
    2,206.61x = 3,045.81 × 1,420.66
  4. Step 4: Simplify right side
    2,206.61x = 4,327,045.72
  5. Step 5: Solve for x
    x = 4,327,045.72/2,206.61
  6. Step 6: Final answer
    x = 1,960.95

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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.