Home / 1,335.47-1,838.81-1,158.12

Finding the Fourth Proportional to 1,335.47, 1,838.81 and 1,158.12

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Solution

The fourth proportional to 1,335.47, 1,838.81 and 1,158.12 is: 1,594.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.47 : 1,838.81 = 1,158.12 : x
  2. Step 2: Convert to fraction form
    1,335.47/1,838.81 = 1,158.12/x
  3. Step 3: Cross multiply
    1,335.47x = 1,838.81 × 1,158.12
  4. Step 4: Simplify right side
    1,335.47x = 2,129,556.85
  5. Step 5: Solve for x
    x = 2,129,556.85/1,335.47
  6. Step 6: Final answer
    x = 1,594.62

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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.