Home / 6,421.84-8,861.56-3,588.84

Finding the Fourth Proportional to 6,421.84, 8,861.56 and 3,588.84

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Solution

The fourth proportional to 6,421.84, 8,861.56 and 3,588.84 is: 4,952.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.84 : 8,861.56 = 3,588.84 : x
  2. Step 2: Convert to fraction form
    6,421.84/8,861.56 = 3,588.84/x
  3. Step 3: Cross multiply
    6,421.84x = 8,861.56 × 3,588.84
  4. Step 4: Simplify right side
    6,421.84x = 31,802,712.02
  5. Step 5: Solve for x
    x = 31,802,712.02/6,421.84
  6. Step 6: Final answer
    x = 4,952.28

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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.