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Finding the Fourth Proportional to 2,162.08, 2,981.28 and 1,334.08

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Solution

The fourth proportional to 2,162.08, 2,981.28 and 1,334.08 is: 1,839.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,162.08 : 2,981.28 = 1,334.08 : x
  2. Step 2: Convert to fraction form
    2,162.08/2,981.28 = 1,334.08/x
  3. Step 3: Cross multiply
    2,162.08x = 2,981.28 × 1,334.08
  4. Step 4: Simplify right side
    2,162.08x = 3,977,266.02
  5. Step 5: Solve for x
    x = 3,977,266.02/2,162.08
  6. Step 6: Final answer
    x = 1,839.56

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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.