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Finding the Fourth Proportional to 9,920.48, 14,880.24 and 3,681.71

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Solution

The fourth proportional to 9,920.48, 14,880.24 and 3,681.71 is: 5,522.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,920.48 : 14,880.24 = 3,681.71 : x
  2. Step 2: Convert to fraction form
    9,920.48/14,880.24 = 3,681.71/x
  3. Step 3: Cross multiply
    9,920.48x = 14,880.24 × 3,681.71
  4. Step 4: Simplify right side
    9,920.48x = 54,784,709.81
  5. Step 5: Solve for x
    x = 54,784,709.81/9,920.48
  6. Step 6: Final answer
    x = 5,522.38

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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.