Home / 2,178.28-3,008.46-1,478.44

Finding the Fourth Proportional to 2,178.28, 3,008.46 and 1,478.44

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Solution

The fourth proportional to 2,178.28, 3,008.46 and 1,478.44 is: 2,041.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.28 : 3,008.46 = 1,478.44 : x
  2. Step 2: Convert to fraction form
    2,178.28/3,008.46 = 1,478.44/x
  3. Step 3: Cross multiply
    2,178.28x = 3,008.46 × 1,478.44
  4. Step 4: Simplify right side
    2,178.28x = 4,447,827.60
  5. Step 5: Solve for x
    x = 4,447,827.60/2,178.28
  6. Step 6: Final answer
    x = 2,041.90

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1.5x scale

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.