Home / 3,670.30-5,065.20-2,178.28

Finding the Fourth Proportional to 3,670.30, 5,065.20 and 2,178.28

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Solution

The fourth proportional to 3,670.30, 5,065.20 and 2,178.28 is: 3,006.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,670.30 : 5,065.20 = 2,178.28 : x
  2. Step 2: Convert to fraction form
    3,670.30/5,065.20 = 2,178.28/x
  3. Step 3: Cross multiply
    3,670.30x = 5,065.20 × 2,178.28
  4. Step 4: Simplify right side
    3,670.30x = 11,033,423.86
  5. Step 5: Solve for x
    x = 11,033,423.86/3,670.30
  6. Step 6: Final answer
    x = 3,006.14

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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.