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Finding the Fourth Proportional to 2,617.65, 3,926.49 and 887.49

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Solution

The fourth proportional to 2,617.65, 3,926.49 and 887.49 is: 1,331.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.65 : 3,926.49 = 887.49 : x
  2. Step 2: Convert to fraction form
    2,617.65/3,926.49 = 887.49/x
  3. Step 3: Cross multiply
    2,617.65x = 3,926.49 × 887.49
  4. Step 4: Simplify right side
    2,617.65x = 3,484,720.61
  5. Step 5: Solve for x
    x = 3,484,720.61/2,617.65
  6. Step 6: Final answer
    x = 1,331.24

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Half scale
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Double scale
Find fourth proportional to 2,618.65, 3,927.99 and 888.49
Similar ratio
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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.