Home / 1,529.39-2,110.41-866.21

Finding the Fourth Proportional to 1,529.39, 2,110.41 and 866.21

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Solution

The fourth proportional to 1,529.39, 2,110.41 and 866.21 is: 1,195.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.39 : 2,110.41 = 866.21 : x
  2. Step 2: Convert to fraction form
    1,529.39/2,110.41 = 866.21/x
  3. Step 3: Cross multiply
    1,529.39x = 2,110.41 × 866.21
  4. Step 4: Simplify right side
    1,529.39x = 1,828,047.69
  5. Step 5: Solve for x
    x = 1,828,047.69/1,529.39
  6. Step 6: Final answer
    x = 1,195.28

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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.