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Finding the Fourth Proportional to 4,959.63, 7,438.80 and 2,880.75

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Solution

The fourth proportional to 4,959.63, 7,438.80 and 2,880.75 is: 4,320.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,959.63 : 7,438.80 = 2,880.75 : x
  2. Step 2: Convert to fraction form
    4,959.63/7,438.80 = 2,880.75/x
  3. Step 3: Cross multiply
    4,959.63x = 7,438.80 × 2,880.75
  4. Step 4: Simplify right side
    4,959.63x = 21,429,323.10
  5. Step 5: Solve for x
    x = 21,429,323.10/4,959.63
  6. Step 6: Final answer
    x = 4,320.75

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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.