Home / 1,892.79-2,837.36-1,275.12

Finding the Fourth Proportional to 1,892.79, 2,837.36 and 1,275.12

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Solution

The fourth proportional to 1,892.79, 2,837.36 and 1,275.12 is: 1,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,892.79 : 2,837.36 = 1,275.12 : x
  2. Step 2: Convert to fraction form
    1,892.79/2,837.36 = 1,275.12/x
  3. Step 3: Cross multiply
    1,892.79x = 2,837.36 × 1,275.12
  4. Step 4: Simplify right side
    1,892.79x = 3,617,968.11
  5. Step 5: Solve for x
    x = 3,617,968.11/1,892.79
  6. Step 6: Final answer
    x = 1,911.45

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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.