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Finding the Fourth Proportional to 2,340.92, 3,511.01 and 782.01

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Solution

The fourth proportional to 2,340.92, 3,511.01 and 782.01 is: 1,172.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,340.92 : 3,511.01 = 782.01 : x
  2. Step 2: Convert to fraction form
    2,340.92/3,511.01 = 782.01/x
  3. Step 3: Cross multiply
    2,340.92x = 3,511.01 × 782.01
  4. Step 4: Simplify right side
    2,340.92x = 2,745,641.02
  5. Step 5: Solve for x
    x = 2,745,641.02/2,340.92
  6. Step 6: Final answer
    x = 1,172.89

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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.