Home / 2,238.15-3,088.57-1,243.40

Finding the Fourth Proportional to 2,238.15, 3,088.57 and 1,243.40

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Solution

The fourth proportional to 2,238.15, 3,088.57 and 1,243.40 is: 1,715.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,238.15 : 3,088.57 = 1,243.40 : x
  2. Step 2: Convert to fraction form
    2,238.15/3,088.57 = 1,243.40/x
  3. Step 3: Cross multiply
    2,238.15x = 3,088.57 × 1,243.40
  4. Step 4: Simplify right side
    2,238.15x = 3,840,320.22
  5. Step 5: Solve for x
    x = 3,840,320.22/2,238.15
  6. Step 6: Final answer
    x = 1,715.85

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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.