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Finding the Fourth Proportional to 1,493.94, 2,061 and 934.20

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Solution

The fourth proportional to 1,493.94, 2,061 and 934.20 is: 1,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,493.94 : 2,061 = 934.20 : x
  2. Step 2: Convert to fraction form
    1,493.94/2,061 = 934.20/x
  3. Step 3: Cross multiply
    1,493.94x = 2,061 × 934.20
  4. Step 4: Simplify right side
    1,493.94x = 1,925,386.20
  5. Step 5: Solve for x
    x = 1,925,386.20/1,493.94
  6. Step 6: Final answer
    x = 1,288.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.