Home / 5,645.23-7,790.39-3,255.19

Finding the Fourth Proportional to 5,645.23, 7,790.39 and 3,255.19

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Solution

The fourth proportional to 5,645.23, 7,790.39 and 3,255.19 is: 4,492.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,645.23 : 7,790.39 = 3,255.19 : x
  2. Step 2: Convert to fraction form
    5,645.23/7,790.39 = 3,255.19/x
  3. Step 3: Cross multiply
    5,645.23x = 7,790.39 × 3,255.19
  4. Step 4: Simplify right side
    5,645.23x = 25,359,176.08
  5. Step 5: Solve for x
    x = 25,359,176.08/5,645.23
  6. Step 6: Final answer
    x = 4,492.14

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Half scale
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Double scale
Find fourth proportional to 5,646.23, 7,791.77 and 3,256.19
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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.