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Finding the Fourth Proportional to 1,827.79, 2,740.25 and 657.59

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Solution

The fourth proportional to 1,827.79, 2,740.25 and 657.59 is: 985.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,827.79 : 2,740.25 = 657.59 : x
  2. Step 2: Convert to fraction form
    1,827.79/2,740.25 = 657.59/x
  3. Step 3: Cross multiply
    1,827.79x = 2,740.25 × 657.59
  4. Step 4: Simplify right side
    1,827.79x = 1,801,957.71
  5. Step 5: Solve for x
    x = 1,801,957.71/1,827.79
  6. Step 6: Final answer
    x = 985.87

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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.