Home / 1,280.23-1,919.14-1,166.10

Finding the Fourth Proportional to 1,280.23, 1,919.14 and 1,166.10

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Solution

The fourth proportional to 1,280.23, 1,919.14 and 1,166.10 is: 1,748.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280.23 : 1,919.14 = 1,166.10 : x
  2. Step 2: Convert to fraction form
    1,280.23/1,919.14 = 1,166.10/x
  3. Step 3: Cross multiply
    1,280.23x = 1,919.14 × 1,166.10
  4. Step 4: Simplify right side
    1,280.23x = 2,237,909.15
  5. Step 5: Solve for x
    x = 2,237,909.15/1,280.23
  6. Step 6: Final answer
    x = 1,748.05

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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.