Home / 3,109.16-4,290.56-1,711.92

Finding the Fourth Proportional to 3,109.16, 4,290.56 and 1,711.92

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Solution

The fourth proportional to 3,109.16, 4,290.56 and 1,711.92 is: 2,362.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.16 : 4,290.56 = 1,711.92 : x
  2. Step 2: Convert to fraction form
    3,109.16/4,290.56 = 1,711.92/x
  3. Step 3: Cross multiply
    3,109.16x = 4,290.56 × 1,711.92
  4. Step 4: Simplify right side
    3,109.16x = 7,345,095.48
  5. Step 5: Solve for x
    x = 7,345,095.48/3,109.16
  6. Step 6: Final answer
    x = 2,362.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.