Home / 3,785.05-5,677.74-1,320.07

Finding the Fourth Proportional to 3,785.05, 5,677.74 and 1,320.07

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Solution

The fourth proportional to 3,785.05, 5,677.74 and 1,320.07 is: 1,980.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.05 : 5,677.74 = 1,320.07 : x
  2. Step 2: Convert to fraction form
    3,785.05/5,677.74 = 1,320.07/x
  3. Step 3: Cross multiply
    3,785.05x = 5,677.74 × 1,320.07
  4. Step 4: Simplify right side
    3,785.05x = 7,495,014.24
  5. Step 5: Solve for x
    x = 7,495,014.24/3,785.05
  6. Step 6: Final answer
    x = 1,980.16

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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.