Home / 3,470.68-5,206.05-1,390.87

Finding the Fourth Proportional to 3,470.68, 5,206.05 and 1,390.87

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Solution

The fourth proportional to 3,470.68, 5,206.05 and 1,390.87 is: 2,086.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470.68 : 5,206.05 = 1,390.87 : x
  2. Step 2: Convert to fraction form
    3,470.68/5,206.05 = 1,390.87/x
  3. Step 3: Cross multiply
    3,470.68x = 5,206.05 × 1,390.87
  4. Step 4: Simplify right side
    3,470.68x = 7,240,938.76
  5. Step 5: Solve for x
    x = 7,240,938.76/3,470.68
  6. Step 6: Final answer
    x = 2,086.32

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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.