Home / 1,891.13-2,609.76-1,105.19

Finding the Fourth Proportional to 1,891.13, 2,609.76 and 1,105.19

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Solution

The fourth proportional to 1,891.13, 2,609.76 and 1,105.19 is: 1,525.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.13 : 2,609.76 = 1,105.19 : x
  2. Step 2: Convert to fraction form
    1,891.13/2,609.76 = 1,105.19/x
  3. Step 3: Cross multiply
    1,891.13x = 2,609.76 × 1,105.19
  4. Step 4: Simplify right side
    1,891.13x = 2,884,267.61
  5. Step 5: Solve for x
    x = 2,884,267.61/1,891.13
  6. Step 6: Final answer
    x = 1,525.16

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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.