Home / 1,549.18-2,138.43-1,025.38

Finding the Fourth Proportional to 1,549.18, 2,138.43 and 1,025.38

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Solution

The fourth proportional to 1,549.18, 2,138.43 and 1,025.38 is: 1,415.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549.18 : 2,138.43 = 1,025.38 : x
  2. Step 2: Convert to fraction form
    1,549.18/2,138.43 = 1,025.38/x
  3. Step 3: Cross multiply
    1,549.18x = 2,138.43 × 1,025.38
  4. Step 4: Simplify right side
    1,549.18x = 2,192,703.35
  5. Step 5: Solve for x
    x = 2,192,703.35/1,549.18
  6. Step 6: Final answer
    x = 1,415.40

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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.