Home / 2,906.88-4,011.36-1,728.08

Finding the Fourth Proportional to 2,906.88, 4,011.36 and 1,728.08

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Solution

The fourth proportional to 2,906.88, 4,011.36 and 1,728.08 is: 2,384.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,906.88 : 4,011.36 = 1,728.08 : x
  2. Step 2: Convert to fraction form
    2,906.88/4,011.36 = 1,728.08/x
  3. Step 3: Cross multiply
    2,906.88x = 4,011.36 × 1,728.08
  4. Step 4: Simplify right side
    2,906.88x = 6,931,950.99
  5. Step 5: Solve for x
    x = 6,931,950.99/2,906.88
  6. Step 6: Final answer
    x = 2,384.67

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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.