Home / 2,138.30-2,950.83-1,253.93

Finding the Fourth Proportional to 2,138.30, 2,950.83 and 1,253.93

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Solution

The fourth proportional to 2,138.30, 2,950.83 and 1,253.93 is: 1,730.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.30 : 2,950.83 = 1,253.93 : x
  2. Step 2: Convert to fraction form
    2,138.30/2,950.83 = 1,253.93/x
  3. Step 3: Cross multiply
    2,138.30x = 2,950.83 × 1,253.93
  4. Step 4: Simplify right side
    2,138.30x = 3,700,136.11
  5. Step 5: Solve for x
    x = 3,700,136.11/2,138.30
  6. Step 6: Final answer
    x = 1,730.41

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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.