Home / 1,623.42-2,434.95-636.21

Finding the Fourth Proportional to 1,623.42, 2,434.95 and 636.21

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Solution

The fourth proportional to 1,623.42, 2,434.95 and 636.21 is: 954.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,623.42 : 2,434.95 = 636.21 : x
  2. Step 2: Convert to fraction form
    1,623.42/2,434.95 = 636.21/x
  3. Step 3: Cross multiply
    1,623.42x = 2,434.95 × 636.21
  4. Step 4: Simplify right side
    1,623.42x = 1,549,139.54
  5. Step 5: Solve for x
    x = 1,549,139.54/1,623.42
  6. Step 6: Final answer
    x = 954.24

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1.5x scale

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.