Home / 1,358.17-1,869.51-1,183.21

Finding the Fourth Proportional to 1,358.17, 1,869.51 and 1,183.21

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Solution

The fourth proportional to 1,358.17, 1,869.51 and 1,183.21 is: 1,628.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.17 : 1,869.51 = 1,183.21 : x
  2. Step 2: Convert to fraction form
    1,358.17/1,869.51 = 1,183.21/x
  3. Step 3: Cross multiply
    1,358.17x = 1,869.51 × 1,183.21
  4. Step 4: Simplify right side
    1,358.17x = 2,212,013.58
  5. Step 5: Solve for x
    x = 2,212,013.58/1,358.17
  6. Step 6: Final answer
    x = 1,628.68

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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.