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Finding the Fourth Proportional to 2,138.50, 2,950.93 and 1,254.13

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Solution

The fourth proportional to 2,138.50, 2,950.93 and 1,254.13 is: 1,730.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.50 : 2,950.93 = 1,254.13 : x
  2. Step 2: Convert to fraction form
    2,138.50/2,950.93 = 1,254.13/x
  3. Step 3: Cross multiply
    2,138.50x = 2,950.93 × 1,254.13
  4. Step 4: Simplify right side
    2,138.50x = 3,700,860.63
  5. Step 5: Solve for x
    x = 3,700,860.63/2,138.50
  6. Step 6: Final answer
    x = 1,730.59

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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.