Home / 1,465.77-2,021.93-905.84

Finding the Fourth Proportional to 1,465.77, 2,021.93 and 905.84

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Solution

The fourth proportional to 1,465.77, 2,021.93 and 905.84 is: 1,249.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,465.77 : 2,021.93 = 905.84 : x
  2. Step 2: Convert to fraction form
    1,465.77/2,021.93 = 905.84/x
  3. Step 3: Cross multiply
    1,465.77x = 2,021.93 × 905.84
  4. Step 4: Simplify right side
    1,465.77x = 1,831,549.39
  5. Step 5: Solve for x
    x = 1,831,549.39/1,465.77
  6. Step 6: Final answer
    x = 1,249.54

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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.