Home / 1,529.60-2,111.13-891.96

Finding the Fourth Proportional to 1,529.60, 2,111.13 and 891.96

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Solution

The fourth proportional to 1,529.60, 2,111.13 and 891.96 is: 1,231.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.60 : 2,111.13 = 891.96 : x
  2. Step 2: Convert to fraction form
    1,529.60/2,111.13 = 891.96/x
  3. Step 3: Cross multiply
    1,529.60x = 2,111.13 × 891.96
  4. Step 4: Simplify right side
    1,529.60x = 1,883,035.60
  5. Step 5: Solve for x
    x = 1,883,035.60/1,529.60
  6. Step 6: Final answer
    x = 1,231.07

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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.