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Finding the Fourth Proportional to 1,709.39, 2,358.90 and 963.51

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Solution

The fourth proportional to 1,709.39, 2,358.90 and 963.51 is: 1,329.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.39 : 2,358.90 = 963.51 : x
  2. Step 2: Convert to fraction form
    1,709.39/2,358.90 = 963.51/x
  3. Step 3: Cross multiply
    1,709.39x = 2,358.90 × 963.51
  4. Step 4: Simplify right side
    1,709.39x = 2,272,823.74
  5. Step 5: Solve for x
    x = 2,272,823.74/1,709.39
  6. Step 6: Final answer
    x = 1,329.61

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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.