Home / 3,582.90-5,370.48-1,390.68

Finding the Fourth Proportional to 3,582.90, 5,370.48 and 1,390.68

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Solution

The fourth proportional to 3,582.90, 5,370.48 and 1,390.68 is: 2,084.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,582.90 : 5,370.48 = 1,390.68 : x
  2. Step 2: Convert to fraction form
    3,582.90/5,370.48 = 1,390.68/x
  3. Step 3: Cross multiply
    3,582.90x = 5,370.48 × 1,390.68
  4. Step 4: Simplify right side
    3,582.90x = 7,468,619.13
  5. Step 5: Solve for x
    x = 7,468,619.13/3,582.90
  6. Step 6: Final answer
    x = 2,084.52

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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.