Home / 1,531.92-2,119.62-1,335.84

Finding the Fourth Proportional to 1,531.92, 2,119.62 and 1,335.84

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Solution

The fourth proportional to 1,531.92, 2,119.62 and 1,335.84 is: 1,848.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.92 : 2,119.62 = 1,335.84 : x
  2. Step 2: Convert to fraction form
    1,531.92/2,119.62 = 1,335.84/x
  3. Step 3: Cross multiply
    1,531.92x = 2,119.62 × 1,335.84
  4. Step 4: Simplify right side
    1,531.92x = 2,831,473.18
  5. Step 5: Solve for x
    x = 2,831,473.18/1,531.92
  6. Step 6: Final answer
    x = 1,848.32

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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.