Home / 1,405.70-2,108.55-944.90

Finding the Fourth Proportional to 1,405.70, 2,108.55 and 944.90

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Solution

The fourth proportional to 1,405.70, 2,108.55 and 944.90 is: 1,417.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405.70 : 2,108.55 = 944.90 : x
  2. Step 2: Convert to fraction form
    1,405.70/2,108.55 = 944.90/x
  3. Step 3: Cross multiply
    1,405.70x = 2,108.55 × 944.90
  4. Step 4: Simplify right side
    1,405.70x = 1,992,368.90
  5. Step 5: Solve for x
    x = 1,992,368.90/1,405.70
  6. Step 6: Final answer
    x = 1,417.35

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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.