Home / 3,785.30-5,677.97-1,320.11

Finding the Fourth Proportional to 3,785.30, 5,677.97 and 1,320.11

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Solution

The fourth proportional to 3,785.30, 5,677.97 and 1,320.11 is: 1,980.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.30 : 5,677.97 = 1,320.11 : x
  2. Step 2: Convert to fraction form
    3,785.30/5,677.97 = 1,320.11/x
  3. Step 3: Cross multiply
    3,785.30x = 5,677.97 × 1,320.11
  4. Step 4: Simplify right side
    3,785.30x = 7,495,509.99
  5. Step 5: Solve for x
    x = 7,495,509.99/3,785.30
  6. Step 6: Final answer
    x = 1,980.17

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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.