Home / 1,529.40-2,110.52-830.76

Finding the Fourth Proportional to 1,529.40, 2,110.52 and 830.76

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Solution

The fourth proportional to 1,529.40, 2,110.52 and 830.76 is: 1,146.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.40 : 2,110.52 = 830.76 : x
  2. Step 2: Convert to fraction form
    1,529.40/2,110.52 = 830.76/x
  3. Step 3: Cross multiply
    1,529.40x = 2,110.52 × 830.76
  4. Step 4: Simplify right side
    1,529.40x = 1,753,335.60
  5. Step 5: Solve for x
    x = 1,753,335.60/1,529.40
  6. Step 6: Final answer
    x = 1,146.42

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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.