Home / 4,807.30-7,215.05-2,178.80

Finding the Fourth Proportional to 4,807.30, 7,215.05 and 2,178.80

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Solution

The fourth proportional to 4,807.30, 7,215.05 and 2,178.80 is: 3,270.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,807.30 : 7,215.05 = 2,178.80 : x
  2. Step 2: Convert to fraction form
    4,807.30/7,215.05 = 2,178.80/x
  3. Step 3: Cross multiply
    4,807.30x = 7,215.05 × 2,178.80
  4. Step 4: Simplify right side
    4,807.30x = 15,720,141.24
  5. Step 5: Solve for x
    x = 15,720,141.24/4,807.30
  6. Step 6: Final answer
    x = 3,270.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.