Home / 1,553.08-2,138.58-1,342.87

Finding the Fourth Proportional to 1,553.08, 2,138.58 and 1,342.87

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Solution

The fourth proportional to 1,553.08, 2,138.58 and 1,342.87 is: 1,849.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.08 : 2,138.58 = 1,342.87 : x
  2. Step 2: Convert to fraction form
    1,553.08/2,138.58 = 1,342.87/x
  3. Step 3: Cross multiply
    1,553.08x = 2,138.58 × 1,342.87
  4. Step 4: Simplify right side
    1,553.08x = 2,871,834.92
  5. Step 5: Solve for x
    x = 2,871,834.92/1,553.08
  6. Step 6: Final answer
    x = 1,849.12

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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.