Home / 3,165.28-4,749.12-1,315.92

Finding the Fourth Proportional to 3,165.28, 4,749.12 and 1,315.92

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Solution

The fourth proportional to 3,165.28, 4,749.12 and 1,315.92 is: 1,974.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165.28 : 4,749.12 = 1,315.92 : x
  2. Step 2: Convert to fraction form
    3,165.28/4,749.12 = 1,315.92/x
  3. Step 3: Cross multiply
    3,165.28x = 4,749.12 × 1,315.92
  4. Step 4: Simplify right side
    3,165.28x = 6,249,461.99
  5. Step 5: Solve for x
    x = 6,249,461.99/3,165.28
  6. Step 6: Final answer
    x = 1,974.38

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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.