Home / 1,590.14-2,189.22-1,091.72

Finding the Fourth Proportional to 1,590.14, 2,189.22 and 1,091.72

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Solution

The fourth proportional to 1,590.14, 2,189.22 and 1,091.72 is: 1,503.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.14 : 2,189.22 = 1,091.72 : x
  2. Step 2: Convert to fraction form
    1,590.14/2,189.22 = 1,091.72/x
  3. Step 3: Cross multiply
    1,590.14x = 2,189.22 × 1,091.72
  4. Step 4: Simplify right side
    1,590.14x = 2,390,015.26
  5. Step 5: Solve for x
    x = 2,390,015.26/1,590.14
  6. Step 6: Final answer
    x = 1,503.02

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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.