Home / 1,901.14-2,623.90-1,405.22

Finding the Fourth Proportional to 1,901.14, 2,623.90 and 1,405.22

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Solution

The fourth proportional to 1,901.14, 2,623.90 and 1,405.22 is: 1,939.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,901.14 : 2,623.90 = 1,405.22 : x
  2. Step 2: Convert to fraction form
    1,901.14/2,623.90 = 1,405.22/x
  3. Step 3: Cross multiply
    1,901.14x = 2,623.90 × 1,405.22
  4. Step 4: Simplify right side
    1,901.14x = 3,687,140.13
  5. Step 5: Solve for x
    x = 3,687,140.13/1,901.14
  6. Step 6: Final answer
    x = 1,939.44

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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.