Home / 2,178.18-3,005.55-1,246.50

Finding the Fourth Proportional to 2,178.18, 3,005.55 and 1,246.50

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Solution

The fourth proportional to 2,178.18, 3,005.55 and 1,246.50 is: 1,719.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.18 : 3,005.55 = 1,246.50 : x
  2. Step 2: Convert to fraction form
    2,178.18/3,005.55 = 1,246.50/x
  3. Step 3: Cross multiply
    2,178.18x = 3,005.55 × 1,246.50
  4. Step 4: Simplify right side
    2,178.18x = 3,746,418.08
  5. Step 5: Solve for x
    x = 3,746,418.08/2,178.18
  6. Step 6: Final answer
    x = 1,719.98

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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.