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Finding the Fourth Proportional to 3,259.71, 4,889.16 and 1,310.45

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Solution

The fourth proportional to 3,259.71, 4,889.16 and 1,310.45 is: 1,965.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,259.71 : 4,889.16 = 1,310.45 : x
  2. Step 2: Convert to fraction form
    3,259.71/4,889.16 = 1,310.45/x
  3. Step 3: Cross multiply
    3,259.71x = 4,889.16 × 1,310.45
  4. Step 4: Simplify right side
    3,259.71x = 6,406,975.28
  5. Step 5: Solve for x
    x = 6,406,975.28/3,259.71
  6. Step 6: Final answer
    x = 1,965.50

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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.