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Finding the Fourth Proportional to 1,742.82, 2,612.97 and 877.74

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Solution

The fourth proportional to 1,742.82, 2,612.97 and 877.74 is: 1,315.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742.82 : 2,612.97 = 877.74 : x
  2. Step 2: Convert to fraction form
    1,742.82/2,612.97 = 877.74/x
  3. Step 3: Cross multiply
    1,742.82x = 2,612.97 × 877.74
  4. Step 4: Simplify right side
    1,742.82x = 2,293,508.29
  5. Step 5: Solve for x
    x = 2,293,508.29/1,742.82
  6. Step 6: Final answer
    x = 1,315.98

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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.