Home / 1,464.21-2,021.13-905.63

Finding the Fourth Proportional to 1,464.21, 2,021.13 and 905.63

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Solution

The fourth proportional to 1,464.21, 2,021.13 and 905.63 is: 1,250.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,464.21 : 2,021.13 = 905.63 : x
  2. Step 2: Convert to fraction form
    1,464.21/2,021.13 = 905.63/x
  3. Step 3: Cross multiply
    1,464.21x = 2,021.13 × 905.63
  4. Step 4: Simplify right side
    1,464.21x = 1,830,385.86
  5. Step 5: Solve for x
    x = 1,830,385.86/1,464.21
  6. Step 6: Final answer
    x = 1,250.08

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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.