Home / 1,641.27-2,265.44-1,074.20

Finding the Fourth Proportional to 1,641.27, 2,265.44 and 1,074.20

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Solution

The fourth proportional to 1,641.27, 2,265.44 and 1,074.20 is: 1,482.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,641.27 : 2,265.44 = 1,074.20 : x
  2. Step 2: Convert to fraction form
    1,641.27/2,265.44 = 1,074.20/x
  3. Step 3: Cross multiply
    1,641.27x = 2,265.44 × 1,074.20
  4. Step 4: Simplify right side
    1,641.27x = 2,433,518.95
  5. Step 5: Solve for x
    x = 2,433,518.95/1,641.27
  6. Step 6: Final answer
    x = 1,482.70

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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.