Home / 2,623.41-3,930.80-1,931.49

Finding the Fourth Proportional to 2,623.41, 3,930.80 and 1,931.49

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Solution

The fourth proportional to 2,623.41, 3,930.80 and 1,931.49 is: 2,894.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,623.41 : 3,930.80 = 1,931.49 : x
  2. Step 2: Convert to fraction form
    2,623.41/3,930.80 = 1,931.49/x
  3. Step 3: Cross multiply
    2,623.41x = 3,930.80 × 1,931.49
  4. Step 4: Simplify right side
    2,623.41x = 7,592,291.23
  5. Step 5: Solve for x
    x = 7,592,291.23/2,623.41
  6. Step 6: Final answer
    x = 2,894.05

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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.