Home / 3,180.77-4,389.38-1,854.39

Finding the Fourth Proportional to 3,180.77, 4,389.38 and 1,854.39

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Solution

The fourth proportional to 3,180.77, 4,389.38 and 1,854.39 is: 2,559.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.77 : 4,389.38 = 1,854.39 : x
  2. Step 2: Convert to fraction form
    3,180.77/4,389.38 = 1,854.39/x
  3. Step 3: Cross multiply
    3,180.77x = 4,389.38 × 1,854.39
  4. Step 4: Simplify right side
    3,180.77x = 8,139,622.26
  5. Step 5: Solve for x
    x = 8,139,622.26/3,180.77
  6. Step 6: Final answer
    x = 2,559.01

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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.