Home / 8,421.57-11,626.47-5,911.38

Finding the Fourth Proportional to 8,421.57, 11,626.47 and 5,911.38

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Solution

The fourth proportional to 8,421.57, 11,626.47 and 5,911.38 is: 8,161.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.57 : 11,626.47 = 5,911.38 : x
  2. Step 2: Convert to fraction form
    8,421.57/11,626.47 = 5,911.38/x
  3. Step 3: Cross multiply
    8,421.57x = 11,626.47 × 5,911.38
  4. Step 4: Simplify right side
    8,421.57x = 68,728,482.23
  5. Step 5: Solve for x
    x = 68,728,482.23/8,421.57
  6. Step 6: Final answer
    x = 8,161.01

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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.