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Finding the Fourth Proportional to 3,395.59, 5,090.99 and 1,313.82

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Solution

The fourth proportional to 3,395.59, 5,090.99 and 1,313.82 is: 1,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,395.59 : 5,090.99 = 1,313.82 : x
  2. Step 2: Convert to fraction form
    3,395.59/5,090.99 = 1,313.82/x
  3. Step 3: Cross multiply
    3,395.59x = 5,090.99 × 1,313.82
  4. Step 4: Simplify right side
    3,395.59x = 6,688,637.91
  5. Step 5: Solve for x
    x = 6,688,637.91/3,395.59
  6. Step 6: Final answer
    x = 1,969.80

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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.