Home / 6,421.41-8,859.56-3,588.39

Finding the Fourth Proportional to 6,421.41, 8,859.56 and 3,588.39

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Solution

The fourth proportional to 6,421.41, 8,859.56 and 3,588.39 is: 4,950.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.41 : 8,859.56 = 3,588.39 : x
  2. Step 2: Convert to fraction form
    6,421.41/8,859.56 = 3,588.39/x
  3. Step 3: Cross multiply
    6,421.41x = 8,859.56 × 3,588.39
  4. Step 4: Simplify right side
    6,421.41x = 31,791,538.57
  5. Step 5: Solve for x
    x = 31,791,538.57/6,421.41
  6. Step 6: Final answer
    x = 4,950.87

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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.