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Finding the Fourth Proportional to 9,888.84, 13,648.14 and 6,355.80

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Solution

The fourth proportional to 9,888.84, 13,648.14 and 6,355.80 is: 8,771.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,888.84 : 13,648.14 = 6,355.80 : x
  2. Step 2: Convert to fraction form
    9,888.84/13,648.14 = 6,355.80/x
  3. Step 3: Cross multiply
    9,888.84x = 13,648.14 × 6,355.80
  4. Step 4: Simplify right side
    9,888.84x = 86,744,848.21
  5. Step 5: Solve for x
    x = 86,744,848.21/9,888.84
  6. Step 6: Final answer
    x = 8,771.99

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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.