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Finding the Fourth Proportional to 1,908.60, 2,862.90 and 610.08

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Solution

The fourth proportional to 1,908.60, 2,862.90 and 610.08 is: 915.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.60 : 2,862.90 = 610.08 : x
  2. Step 2: Convert to fraction form
    1,908.60/2,862.90 = 610.08/x
  3. Step 3: Cross multiply
    1,908.60x = 2,862.90 × 610.08
  4. Step 4: Simplify right side
    1,908.60x = 1,746,598.03
  5. Step 5: Solve for x
    x = 1,746,598.03/1,908.60
  6. Step 6: Final answer
    x = 915.12

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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.