Home / 1,341.36-1,838.70-1,318.68

Finding the Fourth Proportional to 1,341.36, 1,838.70 and 1,318.68

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Solution

The fourth proportional to 1,341.36, 1,838.70 and 1,318.68 is: 1,807.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.36 : 1,838.70 = 1,318.68 : x
  2. Step 2: Convert to fraction form
    1,341.36/1,838.70 = 1,318.68/x
  3. Step 3: Cross multiply
    1,341.36x = 1,838.70 × 1,318.68
  4. Step 4: Simplify right side
    1,341.36x = 2,424,656.92
  5. Step 5: Solve for x
    x = 2,424,656.92/1,341.36
  6. Step 6: Final answer
    x = 1,807.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.