Home / 1,539.84-2,123.04-1,224.36

Finding the Fourth Proportional to 1,539.84, 2,123.04 and 1,224.36

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Solution

The fourth proportional to 1,539.84, 2,123.04 and 1,224.36 is: 1,688.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.84 : 2,123.04 = 1,224.36 : x
  2. Step 2: Convert to fraction form
    1,539.84/2,123.04 = 1,224.36/x
  3. Step 3: Cross multiply
    1,539.84x = 2,123.04 × 1,224.36
  4. Step 4: Simplify right side
    1,539.84x = 2,599,365.25
  5. Step 5: Solve for x
    x = 2,599,365.25/1,539.84
  6. Step 6: Final answer
    x = 1,688.07

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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.