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Finding the Fourth Proportional to 1,511.03, 2,266.61 and 782.03

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Solution

The fourth proportional to 1,511.03, 2,266.61 and 782.03 is: 1,173.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.03 : 2,266.61 = 782.03 : x
  2. Step 2: Convert to fraction form
    1,511.03/2,266.61 = 782.03/x
  3. Step 3: Cross multiply
    1,511.03x = 2,266.61 × 782.03
  4. Step 4: Simplify right side
    1,511.03x = 1,772,541.78
  5. Step 5: Solve for x
    x = 1,772,541.78/1,511.03
  6. Step 6: Final answer
    x = 1,173.07

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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.