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Finding the Fourth Proportional to 9,763.79, 14,646.37 and 3,920.40

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Solution

The fourth proportional to 9,763.79, 14,646.37 and 3,920.40 is: 5,880.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,763.79 : 14,646.37 = 3,920.40 : x
  2. Step 2: Convert to fraction form
    9,763.79/14,646.37 = 3,920.40/x
  3. Step 3: Cross multiply
    9,763.79x = 14,646.37 × 3,920.40
  4. Step 4: Simplify right side
    9,763.79x = 57,419,688.77
  5. Step 5: Solve for x
    x = 57,419,688.77/9,763.79
  6. Step 6: Final answer
    x = 5,880.88

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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.