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Finding the Fourth Proportional to 2,740.83, 4,110.38 and 891.53

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Solution

The fourth proportional to 2,740.83, 4,110.38 and 891.53 is: 1,337.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.83 : 4,110.38 = 891.53 : x
  2. Step 2: Convert to fraction form
    2,740.83/4,110.38 = 891.53/x
  3. Step 3: Cross multiply
    2,740.83x = 4,110.38 × 891.53
  4. Step 4: Simplify right side
    2,740.83x = 3,664,502.07
  5. Step 5: Solve for x
    x = 3,664,502.07/2,740.83
  6. Step 6: Final answer
    x = 1,337.00

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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.