Home / 1,641.49-2,265.03-933.21

Finding the Fourth Proportional to 1,641.49, 2,265.03 and 933.21

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Solution

The fourth proportional to 1,641.49, 2,265.03 and 933.21 is: 1,287.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,641.49 : 2,265.03 = 933.21 : x
  2. Step 2: Convert to fraction form
    1,641.49/2,265.03 = 933.21/x
  3. Step 3: Cross multiply
    1,641.49x = 2,265.03 × 933.21
  4. Step 4: Simplify right side
    1,641.49x = 2,113,748.65
  5. Step 5: Solve for x
    x = 2,113,748.65/1,641.49
  6. Step 6: Final answer
    x = 1,287.70

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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.