Home / 3,119.40-4,302.90-2,455.24

Finding the Fourth Proportional to 3,119.40, 4,302.90 and 2,455.24

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Solution

The fourth proportional to 3,119.40, 4,302.90 and 2,455.24 is: 3,386.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.40 : 4,302.90 = 2,455.24 : x
  2. Step 2: Convert to fraction form
    3,119.40/4,302.90 = 2,455.24/x
  3. Step 3: Cross multiply
    3,119.40x = 4,302.90 × 2,455.24
  4. Step 4: Simplify right side
    3,119.40x = 10,564,652.20
  5. Step 5: Solve for x
    x = 10,564,652.20/3,119.40
  6. Step 6: Final answer
    x = 3,386.76

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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.