Home / 2,077.79-3,117.11-845.19

Finding the Fourth Proportional to 2,077.79, 3,117.11 and 845.19

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Solution

The fourth proportional to 2,077.79, 3,117.11 and 845.19 is: 1,267.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.79 : 3,117.11 = 845.19 : x
  2. Step 2: Convert to fraction form
    2,077.79/3,117.11 = 845.19/x
  3. Step 3: Cross multiply
    2,077.79x = 3,117.11 × 845.19
  4. Step 4: Simplify right side
    2,077.79x = 2,634,550.20
  5. Step 5: Solve for x
    x = 2,634,550.20/2,077.79
  6. Step 6: Final answer
    x = 1,267.96

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Double scale
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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.