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Finding the Fourth Proportional to 1,602.99, 2,206.98 and 1,395.90

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Solution

The fourth proportional to 1,602.99, 2,206.98 and 1,395.90 is: 1,921.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,602.99 : 2,206.98 = 1,395.90 : x
  2. Step 2: Convert to fraction form
    1,602.99/2,206.98 = 1,395.90/x
  3. Step 3: Cross multiply
    1,602.99x = 2,206.98 × 1,395.90
  4. Step 4: Simplify right side
    1,602.99x = 3,080,723.38
  5. Step 5: Solve for x
    x = 3,080,723.38/1,602.99
  6. Step 6: Final answer
    x = 1,921.86

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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.