Home / 3,785.16-5,678.65-1,188.10

Finding the Fourth Proportional to 3,785.16, 5,678.65 and 1,188.10

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Solution

The fourth proportional to 3,785.16, 5,678.65 and 1,188.10 is: 1,782.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.16 : 5,678.65 = 1,188.10 : x
  2. Step 2: Convert to fraction form
    3,785.16/5,678.65 = 1,188.10/x
  3. Step 3: Cross multiply
    3,785.16x = 5,678.65 × 1,188.10
  4. Step 4: Simplify right side
    3,785.16x = 6,746,804.07
  5. Step 5: Solve for x
    x = 6,746,804.07/3,785.16
  6. Step 6: Final answer
    x = 1,782.44

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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.