Home / 1,529.79-2,111.99-1,007.34

Finding the Fourth Proportional to 1,529.79, 2,111.99 and 1,007.34

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Solution

The fourth proportional to 1,529.79, 2,111.99 and 1,007.34 is: 1,390.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.79 : 2,111.99 = 1,007.34 : x
  2. Step 2: Convert to fraction form
    1,529.79/2,111.99 = 1,007.34/x
  3. Step 3: Cross multiply
    1,529.79x = 2,111.99 × 1,007.34
  4. Step 4: Simplify right side
    1,529.79x = 2,127,486.97
  5. Step 5: Solve for x
    x = 2,127,486.97/1,529.79
  6. Step 6: Final answer
    x = 1,390.71

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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.