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Finding the Fourth Proportional to 2,173.94, 3,260.76 and 787.02

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Solution

The fourth proportional to 2,173.94, 3,260.76 and 787.02 is: 1,180.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.94 : 3,260.76 = 787.02 : x
  2. Step 2: Convert to fraction form
    2,173.94/3,260.76 = 787.02/x
  3. Step 3: Cross multiply
    2,173.94x = 3,260.76 × 787.02
  4. Step 4: Simplify right side
    2,173.94x = 2,566,268.16
  5. Step 5: Solve for x
    x = 2,566,268.16/2,173.94
  6. Step 6: Final answer
    x = 1,180.47

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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.