Home / 3,180.86-4,390.04-1,854.98

Finding the Fourth Proportional to 3,180.86, 4,390.04 and 1,854.98

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Solution

The fourth proportional to 3,180.86, 4,390.04 and 1,854.98 is: 2,560.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.86 : 4,390.04 = 1,854.98 : x
  2. Step 2: Convert to fraction form
    3,180.86/4,390.04 = 1,854.98/x
  3. Step 3: Cross multiply
    3,180.86x = 4,390.04 × 1,854.98
  4. Step 4: Simplify right side
    3,180.86x = 8,143,436.40
  5. Step 5: Solve for x
    x = 8,143,436.40/3,180.86
  6. Step 6: Final answer
    x = 2,560.14

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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.