Home / 2,190.23-3,285.93-890.99

Finding the Fourth Proportional to 2,190.23, 3,285.93 and 890.99

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Solution

The fourth proportional to 2,190.23, 3,285.93 and 890.99 is: 1,336.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.23 : 3,285.93 = 890.99 : x
  2. Step 2: Convert to fraction form
    2,190.23/3,285.93 = 890.99/x
  3. Step 3: Cross multiply
    2,190.23x = 3,285.93 × 890.99
  4. Step 4: Simplify right side
    2,190.23x = 2,927,730.77
  5. Step 5: Solve for x
    x = 2,927,730.77/2,190.23
  6. Step 6: Final answer
    x = 1,336.72

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.