Home / 3,139.34-4,332.04-1,722.80

Finding the Fourth Proportional to 3,139.34, 4,332.04 and 1,722.80

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Solution

The fourth proportional to 3,139.34, 4,332.04 and 1,722.80 is: 2,377.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.34 : 4,332.04 = 1,722.80 : x
  2. Step 2: Convert to fraction form
    3,139.34/4,332.04 = 1,722.80/x
  3. Step 3: Cross multiply
    3,139.34x = 4,332.04 × 1,722.80
  4. Step 4: Simplify right side
    3,139.34x = 7,463,238.51
  5. Step 5: Solve for x
    x = 7,463,238.51/3,139.34
  6. Step 6: Final answer
    x = 2,377.33

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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.