Home / 3,119.10-4,678.65-2,427.90

Finding the Fourth Proportional to 3,119.10, 4,678.65 and 2,427.90

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Solution

The fourth proportional to 3,119.10, 4,678.65 and 2,427.90 is: 3,641.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.10 : 4,678.65 = 2,427.90 : x
  2. Step 2: Convert to fraction form
    3,119.10/4,678.65 = 2,427.90/x
  3. Step 3: Cross multiply
    3,119.10x = 4,678.65 × 2,427.90
  4. Step 4: Simplify right side
    3,119.10x = 11,359,294.34
  5. Step 5: Solve for x
    x = 11,359,294.34/3,119.10
  6. Step 6: Final answer
    x = 3,641.85

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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.