Home / 3,430.76-5,145.39-1,238.27

Finding the Fourth Proportional to 3,430.76, 5,145.39 and 1,238.27

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Solution

The fourth proportional to 3,430.76, 5,145.39 and 1,238.27 is: 1,857.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.76 : 5,145.39 = 1,238.27 : x
  2. Step 2: Convert to fraction form
    3,430.76/5,145.39 = 1,238.27/x
  3. Step 3: Cross multiply
    3,430.76x = 5,145.39 × 1,238.27
  4. Step 4: Simplify right side
    3,430.76x = 6,371,356.35
  5. Step 5: Solve for x
    x = 6,371,356.35/3,430.76
  6. Step 6: Final answer
    x = 1,857.13

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1.5x scale

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.