Home / 1,641.96-2,263.68-1,288.26

Finding the Fourth Proportional to 1,641.96, 2,263.68 and 1,288.26

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Solution

The fourth proportional to 1,641.96, 2,263.68 and 1,288.26 is: 1,776.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,641.96 : 2,263.68 = 1,288.26 : x
  2. Step 2: Convert to fraction form
    1,641.96/2,263.68 = 1,288.26/x
  3. Step 3: Cross multiply
    1,641.96x = 2,263.68 × 1,288.26
  4. Step 4: Simplify right side
    1,641.96x = 2,916,208.40
  5. Step 5: Solve for x
    x = 2,916,208.40/1,641.96
  6. Step 6: Final answer
    x = 1,776.05

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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.