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Finding the Fourth Proportional to 1,715.82, 2,572.36 and 741.25

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Solution

The fourth proportional to 1,715.82, 2,572.36 and 741.25 is: 1,111.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.82 : 2,572.36 = 741.25 : x
  2. Step 2: Convert to fraction form
    1,715.82/2,572.36 = 741.25/x
  3. Step 3: Cross multiply
    1,715.82x = 2,572.36 × 741.25
  4. Step 4: Simplify right side
    1,715.82x = 1,906,763.21
  5. Step 5: Solve for x
    x = 1,906,763.21/1,715.82
  6. Step 6: Final answer
    x = 1,111.29

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Double scale
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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.