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Finding the Fourth Proportional to 8,903.84, 12,286.88 and 4,870.58

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Solution

The fourth proportional to 8,903.84, 12,286.88 and 4,870.58 is: 6,721.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,903.84 : 12,286.88 = 4,870.58 : x
  2. Step 2: Convert to fraction form
    8,903.84/12,286.88 = 4,870.58/x
  3. Step 3: Cross multiply
    8,903.84x = 12,286.88 × 4,870.58
  4. Step 4: Simplify right side
    8,903.84x = 59,844,231.99
  5. Step 5: Solve for x
    x = 59,844,231.99/8,903.84
  6. Step 6: Final answer
    x = 6,721.17

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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.