Home / 2,117.20-2,920.73-1,409.37

Finding the Fourth Proportional to 2,117.20, 2,920.73 and 1,409.37

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Solution

The fourth proportional to 2,117.20, 2,920.73 and 1,409.37 is: 1,944.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.20 : 2,920.73 = 1,409.37 : x
  2. Step 2: Convert to fraction form
    2,117.20/2,920.73 = 1,409.37/x
  3. Step 3: Cross multiply
    2,117.20x = 2,920.73 × 1,409.37
  4. Step 4: Simplify right side
    2,117.20x = 4,116,382.19
  5. Step 5: Solve for x
    x = 4,116,382.19/2,117.20
  6. Step 6: Final answer
    x = 1,944.26

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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.