Home / 1,529.09-2,110.13-830.47

Finding the Fourth Proportional to 1,529.09, 2,110.13 and 830.47

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Solution

The fourth proportional to 1,529.09, 2,110.13 and 830.47 is: 1,146.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.09 : 2,110.13 = 830.47 : x
  2. Step 2: Convert to fraction form
    1,529.09/2,110.13 = 830.47/x
  3. Step 3: Cross multiply
    1,529.09x = 2,110.13 × 830.47
  4. Step 4: Simplify right side
    1,529.09x = 1,752,384.96
  5. Step 5: Solve for x
    x = 1,752,384.96/1,529.09
  6. Step 6: Final answer
    x = 1,146.03

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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.