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Finding the Fourth Proportional to 1,747.36, 2,411.24 and 961.40

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Solution

The fourth proportional to 1,747.36, 2,411.24 and 961.40 is: 1,326.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,747.36 : 2,411.24 = 961.40 : x
  2. Step 2: Convert to fraction form
    1,747.36/2,411.24 = 961.40/x
  3. Step 3: Cross multiply
    1,747.36x = 2,411.24 × 961.40
  4. Step 4: Simplify right side
    1,747.36x = 2,318,166.14
  5. Step 5: Solve for x
    x = 2,318,166.14/1,747.36
  6. Step 6: Final answer
    x = 1,326.67

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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.