Home / 2,688.11-3,709.57-1,509.18

Finding the Fourth Proportional to 2,688.11, 3,709.57 and 1,509.18

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Solution

The fourth proportional to 2,688.11, 3,709.57 and 1,509.18 is: 2,082.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.11 : 3,709.57 = 1,509.18 : x
  2. Step 2: Convert to fraction form
    2,688.11/3,709.57 = 1,509.18/x
  3. Step 3: Cross multiply
    2,688.11x = 3,709.57 × 1,509.18
  4. Step 4: Simplify right side
    2,688.11x = 5,598,408.85
  5. Step 5: Solve for x
    x = 5,598,408.85/2,688.11
  6. Step 6: Final answer
    x = 2,082.66

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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.