Home / 3,470.10-5,205.14-1,390.62

Finding the Fourth Proportional to 3,470.10, 5,205.14 and 1,390.62

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Solution

The fourth proportional to 3,470.10, 5,205.14 and 1,390.62 is: 2,085.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470.10 : 5,205.14 = 1,390.62 : x
  2. Step 2: Convert to fraction form
    3,470.10/5,205.14 = 1,390.62/x
  3. Step 3: Cross multiply
    3,470.10x = 5,205.14 × 1,390.62
  4. Step 4: Simplify right side
    3,470.10x = 7,238,371.79
  5. Step 5: Solve for x
    x = 7,238,371.79/3,470.10
  6. Step 6: Final answer
    x = 2,085.93

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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.