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Finding the Fourth Proportional to 3,148.95, 4,723.11 and 957.69

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Solution

The fourth proportional to 3,148.95, 4,723.11 and 957.69 is: 1,436.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,148.95 : 4,723.11 = 957.69 : x
  2. Step 2: Convert to fraction form
    3,148.95/4,723.11 = 957.69/x
  3. Step 3: Cross multiply
    3,148.95x = 4,723.11 × 957.69
  4. Step 4: Simplify right side
    3,148.95x = 4,523,275.22
  5. Step 5: Solve for x
    x = 4,523,275.22/3,148.95
  6. Step 6: Final answer
    x = 1,436.44

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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.