Home / 1,892.89-2,612.40-1,147.09

Finding the Fourth Proportional to 1,892.89, 2,612.40 and 1,147.09

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Solution

The fourth proportional to 1,892.89, 2,612.40 and 1,147.09 is: 1,583.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,892.89 : 2,612.40 = 1,147.09 : x
  2. Step 2: Convert to fraction form
    1,892.89/2,612.40 = 1,147.09/x
  3. Step 3: Cross multiply
    1,892.89x = 2,612.40 × 1,147.09
  4. Step 4: Simplify right side
    1,892.89x = 2,996,657.92
  5. Step 5: Solve for x
    x = 2,996,657.92/1,892.89
  6. Step 6: Final answer
    x = 1,583.11

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1.5x scale

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.