Home / 1,589.31-2,193.21-890.67

Finding the Fourth Proportional to 1,589.31, 2,193.21 and 890.67

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Solution

The fourth proportional to 1,589.31, 2,193.21 and 890.67 is: 1,229.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.31 : 2,193.21 = 890.67 : x
  2. Step 2: Convert to fraction form
    1,589.31/2,193.21 = 890.67/x
  3. Step 3: Cross multiply
    1,589.31x = 2,193.21 × 890.67
  4. Step 4: Simplify right side
    1,589.31x = 1,953,426.35
  5. Step 5: Solve for x
    x = 1,953,426.35/1,589.31
  6. Step 6: Final answer
    x = 1,229.10

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Half scale
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Double scale
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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.