Home / 1,127.07-1,556.28-961.83

Finding the Fourth Proportional to 1,127.07, 1,556.28 and 961.83

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Solution

The fourth proportional to 1,127.07, 1,556.28 and 961.83 is: 1,328.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.07 : 1,556.28 = 961.83 : x
  2. Step 2: Convert to fraction form
    1,127.07/1,556.28 = 961.83/x
  3. Step 3: Cross multiply
    1,127.07x = 1,556.28 × 961.83
  4. Step 4: Simplify right side
    1,127.07x = 1,496,876.79
  5. Step 5: Solve for x
    x = 1,496,876.79/1,127.07
  6. Step 6: Final answer
    x = 1,328.11

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1.5x scale

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.