Home / 2,178.64-3,246.58-2,116.24

Finding the Fourth Proportional to 2,178.64, 3,246.58 and 2,116.24

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Solution

The fourth proportional to 2,178.64, 3,246.58 and 2,116.24 is: 3,153.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.64 : 3,246.58 = 2,116.24 : x
  2. Step 2: Convert to fraction form
    2,178.64/3,246.58 = 2,116.24/x
  3. Step 3: Cross multiply
    2,178.64x = 3,246.58 × 2,116.24
  4. Step 4: Simplify right side
    2,178.64x = 6,870,542.46
  5. Step 5: Solve for x
    x = 6,870,542.46/2,178.64
  6. Step 6: Final answer
    x = 3,153.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.