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Finding the Fourth Proportional to 6,390.84, 9,587.85 and 6,284.89

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Solution

The fourth proportional to 6,390.84, 9,587.85 and 6,284.89 is: 9,428.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.84 : 9,587.85 = 6,284.89 : x
  2. Step 2: Convert to fraction form
    6,390.84/9,587.85 = 6,284.89/x
  3. Step 3: Cross multiply
    6,390.84x = 9,587.85 × 6,284.89
  4. Step 4: Simplify right side
    6,390.84x = 60,258,558.62
  5. Step 5: Solve for x
    x = 60,258,558.62/6,390.84
  6. Step 6: Final answer
    x = 9,428.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.