Home / 1,556.30-2,147.10-926.85

Finding the Fourth Proportional to 1,556.30, 2,147.10 and 926.85

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Solution

The fourth proportional to 1,556.30, 2,147.10 and 926.85 is: 1,278.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.30 : 2,147.10 = 926.85 : x
  2. Step 2: Convert to fraction form
    1,556.30/2,147.10 = 926.85/x
  3. Step 3: Cross multiply
    1,556.30x = 2,147.10 × 926.85
  4. Step 4: Simplify right side
    1,556.30x = 1,990,032.13
  5. Step 5: Solve for x
    x = 1,990,032.13/1,556.30
  6. Step 6: Final answer
    x = 1,278.70

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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.