Home / 1,195.34-1,645.08-1,011.25

Finding the Fourth Proportional to 1,195.34, 1,645.08 and 1,011.25

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Solution

The fourth proportional to 1,195.34, 1,645.08 and 1,011.25 is: 1,391.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195.34 : 1,645.08 = 1,011.25 : x
  2. Step 2: Convert to fraction form
    1,195.34/1,645.08 = 1,011.25/x
  3. Step 3: Cross multiply
    1,195.34x = 1,645.08 × 1,011.25
  4. Step 4: Simplify right side
    1,195.34x = 1,663,578.92
  5. Step 5: Solve for x
    x = 1,663,578.92/1,195.34
  6. Step 6: Final answer
    x = 1,391.72

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Double scale
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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.