Home / 3,518.31-5,277.77-921.25

Finding the Fourth Proportional to 3,518.31, 5,277.77 and 921.25

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Solution

The fourth proportional to 3,518.31, 5,277.77 and 921.25 is: 1,381.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.31 : 5,277.77 = 921.25 : x
  2. Step 2: Convert to fraction form
    3,518.31/5,277.77 = 921.25/x
  3. Step 3: Cross multiply
    3,518.31x = 5,277.77 × 921.25
  4. Step 4: Simplify right side
    3,518.31x = 4,862,145.61
  5. Step 5: Solve for x
    x = 4,862,145.61/3,518.31
  6. Step 6: Final answer
    x = 1,381.95

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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.