Home / 3,422.40-4,722.86-1,930.08

Finding the Fourth Proportional to 3,422.40, 4,722.86 and 1,930.08

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Solution

The fourth proportional to 3,422.40, 4,722.86 and 1,930.08 is: 2,663.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.40 : 4,722.86 = 1,930.08 : x
  2. Step 2: Convert to fraction form
    3,422.40/4,722.86 = 1,930.08/x
  3. Step 3: Cross multiply
    3,422.40x = 4,722.86 × 1,930.08
  4. Step 4: Simplify right side
    3,422.40x = 9,115,482.74
  5. Step 5: Solve for x
    x = 9,115,482.74/3,422.40
  6. Step 6: Final answer
    x = 2,663.48

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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.