Home / 3,119.18-4,673.28-2,780.19

Finding the Fourth Proportional to 3,119.18, 4,673.28 and 2,780.19

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Solution

The fourth proportional to 3,119.18, 4,673.28 and 2,780.19 is: 4,165.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.18 : 4,673.28 = 2,780.19 : x
  2. Step 2: Convert to fraction form
    3,119.18/4,673.28 = 2,780.19/x
  3. Step 3: Cross multiply
    3,119.18x = 4,673.28 × 2,780.19
  4. Step 4: Simplify right side
    3,119.18x = 12,992,606.32
  5. Step 5: Solve for x
    x = 12,992,606.32/3,119.18
  6. Step 6: Final answer
    x = 4,165.40

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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.