Home / 3,412.20-4,708.94-1,920.08

Finding the Fourth Proportional to 3,412.20, 4,708.94 and 1,920.08

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Solution

The fourth proportional to 3,412.20, 4,708.94 and 1,920.08 is: 2,649.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.20 : 4,708.94 = 1,920.08 : x
  2. Step 2: Convert to fraction form
    3,412.20/4,708.94 = 1,920.08/x
  3. Step 3: Cross multiply
    3,412.20x = 4,708.94 × 1,920.08
  4. Step 4: Simplify right side
    3,412.20x = 9,041,541.52
  5. Step 5: Solve for x
    x = 9,041,541.52/3,412.20
  6. Step 6: Final answer
    x = 2,649.77

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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.