Home / 1,332.09-1,838.20-742.51

Finding the Fourth Proportional to 1,332.09, 1,838.20 and 742.51

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Solution

The fourth proportional to 1,332.09, 1,838.20 and 742.51 is: 1,024.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.09 : 1,838.20 = 742.51 : x
  2. Step 2: Convert to fraction form
    1,332.09/1,838.20 = 742.51/x
  3. Step 3: Cross multiply
    1,332.09x = 1,838.20 × 742.51
  4. Step 4: Simplify right side
    1,332.09x = 1,364,881.88
  5. Step 5: Solve for x
    x = 1,364,881.88/1,332.09
  6. Step 6: Final answer
    x = 1,024.62

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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.