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Finding the Fourth Proportional to 9,880, 14,827.28 and 4,685.88

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Solution

The fourth proportional to 9,880, 14,827.28 and 4,685.88 is: 7,032.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,880 : 14,827.28 = 4,685.88 : x
  2. Step 2: Convert to fraction form
    9,880/14,827.28 = 4,685.88/x
  3. Step 3: Cross multiply
    9,880x = 14,827.28 × 4,685.88
  4. Step 4: Simplify right side
    9,880x = 69,478,854.81
  5. Step 5: Solve for x
    x = 69,478,854.81/9,880
  6. Step 6: Final answer
    x = 7,032.27

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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.