Home / 6,421.05-8,860.77-3,588.21

Finding the Fourth Proportional to 6,421.05, 8,860.77 and 3,588.21

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Solution

The fourth proportional to 6,421.05, 8,860.77 and 3,588.21 is: 4,951.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.05 : 8,860.77 = 3,588.21 : x
  2. Step 2: Convert to fraction form
    6,421.05/8,860.77 = 3,588.21/x
  3. Step 3: Cross multiply
    6,421.05x = 8,860.77 × 3,588.21
  4. Step 4: Simplify right side
    6,421.05x = 31,794,303.52
  5. Step 5: Solve for x
    x = 31,794,303.52/6,421.05
  6. Step 6: Final answer
    x = 4,951.57

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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.