Home / 1,588.13-2,191.61-889.64

Finding the Fourth Proportional to 1,588.13, 2,191.61 and 889.64

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Solution

The fourth proportional to 1,588.13, 2,191.61 and 889.64 is: 1,227.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,588.13 : 2,191.61 = 889.64 : x
  2. Step 2: Convert to fraction form
    1,588.13/2,191.61 = 889.64/x
  3. Step 3: Cross multiply
    1,588.13x = 2,191.61 × 889.64
  4. Step 4: Simplify right side
    1,588.13x = 1,949,735.19
  5. Step 5: Solve for x
    x = 1,949,735.19/1,588.13
  6. Step 6: Final answer
    x = 1,227.70

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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.