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Finding the Fourth Proportional to 7,963.75, 10,990.65 and 4,607.52

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Solution

The fourth proportional to 7,963.75, 10,990.65 and 4,607.52 is: 6,358.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,963.75 : 10,990.65 = 4,607.52 : x
  2. Step 2: Convert to fraction form
    7,963.75/10,990.65 = 4,607.52/x
  3. Step 3: Cross multiply
    7,963.75x = 10,990.65 × 4,607.52
  4. Step 4: Simplify right side
    7,963.75x = 50,639,639.69
  5. Step 5: Solve for x
    x = 50,639,639.69/7,963.75
  6. Step 6: Final answer
    x = 6,358.77

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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.